Stereo Preamps | Audiolab Stereo & Video Center

Mark Levinson No. 523 Dual-Monaural Preamplifier (Demo – Like New)

David Levitan — Tue, 02 Jan 2024 19:34:37 +0000

The Mark Levinson № 523 is the definitive pre-amplifier for the true music lover

Six line-level analog and phono inputs travel through the Mark Levinson proprietary Pure Path discrete, direct-coupled, fully balanced, dual-monaural signal path for breathtaking purity and performance. With precision control including a discrete, balanced R-2R Ladder volume control, class-A Pure Phono stage, and class-A Main Drive Headphone output, the № 523 preamplifier delivers an uncompromising performance regardless of analog source. Housed in a 6000-series aluminum chassis, like all Mark Levinson equipment, the № 523 is designed and handcrafted in the USA.

Mark Levinson Pure Path Circuit Design
Since 1972, Mark Levinson has been dedicated to the uncompromising art of sound, with the guiding principle of musical purity above all else. To achieve that goal like never before, Mark Levinson engineers scoured company archives, ultimately developing a circuit-design philosophy called Pure Path. On a conceptual level, its hallmark principles include a discrete, direct-coupled, fully balanced, dual-monaural signal path that delivers unrestricted, uncompromised sonic purity.

Far from merely arranging high quality components in an intelligent manner, Pure Path is the meeting of science and art: Mark Levinson engineers are tasked to create the best possible measured AND subjective performance. To quote Albert Einstein: “Everything should be made as simple as possible, but not simpler.”

Pure Path highlights in the № 523 include Folded Cascodes, an R-2R Ladder volume control, the class-A Pure Phono stage, and class-A Main Drive Headphone amplifier output.

Analog Mastery: The Folded Cascode
Mark Levinson components are designed around a Pure Path amplifier circuit concept that makes heavy use of a circuit design element called a cascode. Originally created for improving the bandwidth of vacuum tube circuits in radios, Mark Levinson engineers deploy cascodes in Pure Path circuit designs to both improve bandwidth and enhance linearity. A cascode combines two transistors so that they operate as a single composite device that functions like a single transistor, using the wanted characteristics of each component transistor, and rejecting the unwanted characteristics.

Mark Levinson engineers began their design of the preamp gain stage with pairs of JFETs (junction field-effect transistors), chosen for their low noise and high gain. JFETs achieve these characteristics in part by being large, and with their large size comes nonlinear gain – or distortion. To mitigate this, BJTs (bipolar junction transistors) were added to the circuit. The BJTs exhibit very low input impedance and very high output impedance, which translates to excellent bandwidth and linearity. By creating a cascode of the JFETs and BJTs, they created a design with the best characteristics of both sets of devices.

Engineers than connected the output of the cascode to another transistor of the opposite “gender.” Current flows through it in the opposite direction to “turn around” the direction of the signal current. This special connection is called a Folded Cascode and it is a hallmark of the Pure Path circuit: high gain with low noise, wide bandwidth, and excellent linearity.

Superior Volume Control: The R-2R Ladder
The basis of many volume controls is the venerable analog potentiometer – a device with a number of performance drawbacks. The mechanical connection wears out, creating scratching or crackling noises; it is nearly impossible to manufacture an identically performing pair, and mismatches in a stereo pair can cause level imbalances between the two channels; and due to their varied reaction to parasitic capacitances at different volume settings, the sound changes depending on where the volume is set. Rather than attempting to improve upon this flawed design, Mark Levinson engineers abandoned it. Instead, they employed a complex circuit architecture called an R-2R Ladder.

In the R-2R Ladder, a string of resistors, all with identical resistance (R), form the side of the ladder, with another set of resistors forming the rungs, all identically with double the resistance (2R). This unique circuit takes whatever current appears at its input and successively divides it in half at each “rung” of the ladder. Different combinations of “rung” currents can then be selected and added together, precisely delivering nearly any output current, and thereby, volume setting.

An R-2R Ladder is a highly accurate device. The currents through the rungs are determined by fixed resistors, capable of very tight tolerances, able to be closely matched to one another in value. Analog switches “steer” the currents, are precision devices, and have no mechanical contacts to wear out. In short, the R-2R Ladder solves all the problems inherent to potentiometer-based volume controls. That’s why it is a cornerstone of Mark Levinson Pure Path design philosophy.

Military Grade Components
All Mark Levinson equipment employs electronic components carefully chosen for their specific task. Gain-stage JFET pairs have high gain, low noise, low distortion, and because they are encapsulated in the same package, the two devices operate under nearly identical conditions. Capacitors used in critical filtering locations are film types, noted for their consistent performance regardless of temperature and frequency. Finally, resistors in critical gain-setting and feedback locations use tantalum nitride thin-film elements. An extremely costly material, tantalum nitride typically finds use in sensitive military equipment because it is unusually stable with respect to temperature, exhibits very low noise, and is unaffected by magnetic fields. In fine audio equipment, those characteristics make the sound even more revealing and effortless, free of the low-level nonlinearities caused by lesser resistive materials as they heat and cool under dynamic conditions. Housed in an aircraft-grade 6063-T5 extruded aluminum chassis, the № 523 features extremely high build precision, to exceedingly low tolerances.

Pure Phono: Class A for a Classic Medium
Pre-amplifying from turntable to line level can a difficult task, and it is an area where some equipment makers skimp on components and design. The № 526 and № 523 preamplifiers introduce a new Mark Levinson phono stage, Pure Phono, itself following Pure Path design principles including discrete design, free of op amps. The Pure Phono stage operates exclusively in class A throughout, employing tantalum nitride thin-film resistors polypropylene capacitors with punishingly low tolerances. The Pure Phono stage also contains physically separated channels and balanced inputs for purity.

The Pure Phono stage offers a fixed-gain MM section with five capacitive cartridge-loading settings, and an MC section with three gain settings and 10 resistive cartridge-loading settings. And an ultrasonic filter intelligently compensates for rumble and warping.

Completing the Signal Path
The № 523 offers five line-level analog inputs: two balanced (XLR), three single-ended (RCA), in addition to the Pure Phono (RCA with grounding pin) input. The preamplifier delivers its signal to balanced (XLR) and single-ended (RCA) stereo outputs, as well as a 1/4-inch (6.3mm) Main Drive Headphone output integrated into the front panel metalwork – a first for Mark Levinson.

№ 523 Highlights

Pure Path discrete, direct coupled, fully balanced, dual-monaural signal path
Discrete, balanced R-2R Ladder volume control for precision and performance
Class-A Pure Phono stage with physically separated channels for MC and MM
Class-A Main Drive Headphone output for up to 32-ohm headphones using main circuit
Six analog line-level and phono inputs; balanced, single-ended, and headphone outputs
Selectable fourth-order, 80 Hz high-pass filter allows seamless integration of subwoofers
Designed and handcrafted in the USA

General Specifications:

Line Stage Gain, Normal Gain Setting: 13.5dB balanced; 7.5dB single-ended
Line Stage Frequency Response, 20Hz to 20KHz: ±0.02dB
Line Stage Frequency Response, 0.4Hz to 370Hz: +0.1 / -3dB
THD+N @ 1KHz (2VRMS Single-Ended or 4VRMS Balanced Output): <0.003%
Signal-to-Noise Ratio (REF. To 2VRMS Single-Ended or 4VRMS Balanced, Max Vol.): >115dB @ 1kHz
Crosstalk @ 1KHz: <-107dB
Channel Separation: Below Noise Floor (>115dB @ 1KHz)
Input Impedance: >45kΩ
Output Impedance: <80Ω single ended, <160Ω balanced
Maximum Input Level, Normal Gain Setting: >10VRMS, single ended, >15VRMS, balanced
Maximum Output Level: >11VRMS single ended, >22VRMS balanced
Headphone Output Impedance: selectable; <3Ω or 75Ω
Headphone Maximum Output, Low Impedance Setting, 300Ω, 20Hz TO 20KHz, <0.1% THD
Headphone THD+N, 20Hz TO 20KHz, 2V RMS: <0.03% @ 30Ω, <0.01% @ 300Ω
RIAA Frequency Response: 20Hz to 20kHz, ±0.3dB
Infrasonic Filter: Defeatable, 15Hz, 2nd order (12dB/octave)
Moving Magnet Mode, Input Resistance: 47 47kΩ
Moving Magnet Mode, Input Capacitance: Selectable; 50, 100, 150, 200, or 680pF
Moving Magnet Mode, Gain: 40dB @ 1kHz
Moving Magnet Mode, THD+N, 20Hz to 20KHz, 2VRMS Output: <0.03%
Moving Coil Mode, Input Resistance: selectable; 20, 33, 50, 66, 100, 200, 330, 500, 1000, or 47kΩ
Moving Coil Mode, Input Capacitance: 50pF
Moving Coil Mode, Gain: Selectable; 50, 60, or 70dB @ 1kHz
Moving Coil Mode, THD+N, 20Hz to 20KHz, 2VRMS Output: <0.02%, 50 or 60dB settings, <0.04, 70db setting
Analog Inputs: 2 balanced (XLR), 3 single-ended (RCA) line, 1 single-ended (RCA) phono w/ ground
Analog Outputs: 1 balanced (XLR); 1 pair single-ended (RCA), 1 headphone (¼”, 6.3mm TS)
Control Connectors: Ethernet (RJ45), RS-232 (RJ12), Trigger In and Out, IR In, USB-A, Mini USB
Mains Voltage: 100VAC, 115VAC, or 230VAC, factory set
Power Consumption: 0.4W Green Standby, 5W Power Save, 67W Normal Standby, 70W On, idle
Dimensions: Height (with feet): 3.75” (10.2cm) Height (without feet): 3.25” (8.9cm) Width: 17.25” (43.8cm) Depth: 18” (45.7cm)
Net weight: 39 lbs.
Shipping weight: 58 lbs.

Audio Specifications

Line Stage Gain, Normal Gain Setting: 13.5dB balanced; 7.5dB single-ended
Line Stage Frequency Response, 20Hz to 20KHz: ±0.02dB
Line Stage Frequency Response, 0.4Hz to 370Hz: +0.1 / -3dB
THD+N @ 1KHz (2VRMS Single-Ended or 4VRMS Balanced Output): <0.003%
Signal-to-Noise Ratio (REF. To 2VRMS Single-Ended or 4VRMS Balanced, Max Vol.): >115dB @ 1kHz
Crosstalk @ 1KHz: <-107dB
Channel Separation: Below Noise Floor (>115dB @ 1KHz)
Input Impedance: >45kΩ
Output Impedance: <80Ω single ended, <160Ω balanced
Maximum Input Level, Normal Gain Setting: >10VRMS, single ended, >15VRMS, balanced
Maximum Output Level: >11VRMS single ended, >22VRMS balanced
Headphone Output Impedance: selectable; <3Ω or 75Ω
Headphone THD+N, 20Hz TO 20KHz, 2V RMS: <0.03% @ 30Ω, <0.01% @ 300Ω
RIAA Frequency Response: 20Hz to 20kHz, ±0.3dB
Infrasonic Filter: Defeatable, 15Hz, 2nd order (12dB/octave)
Moving Magnet Mode, Input Resistance: 47 47kΩ
Moving Magnet Mode, Input Capacitance: Selectable; 50, 100, 150, 200, or 680pF
Moving Magnet Mode, Gain: 40dB @ 1kHz
Moving Magnet Mode, THD+N, 20Hz to 20KHz, 2VRMS Output: <0.03%
Moving Coil Mode, Input Resistance: selectable; 20, 33, 50, 66, 100, 200, 330, 500, 1000, or 47kΩ
Moving Coil Mode, Input Capacitance: 50pF
Moving Coil Mode, Selectable; 50, 60, or 70dB @ 1kHz
Moving Coil Mode, THD+N, 20Hz to 20KHz, 2VRMS Output: <0.02%, 50 or 60dB settings, <0.04, 70db setting
Analog Inputs: 2 balanced (XLR), 3 single-ended (RCA) line, 1 single-ended (RCA) phono w/ ground
Analog Outputs: 1 balanced (XLR); 1 pair single-ended (RCA), 1 headphone (¼”, 6.3mm TS)
Control Connectors: Ethernet (RJ45), RS-232 (RJ12), Trigger In and Out, IR In, USB-A, Mini USB
Mains Voltage: 100VAC, 115VAC, or 230VAC, factory set
Power Consumption: 0.4W Green Standby, 5W Power Save, 67W Normal Standby, 70W On, idle

The post Mark Levinson No. 523 Dual-Monaural Preamplifier (Demo – Like New) first appeared on Audiolab Stereo & Video Center.

Hegel P30A Preamplifier

doug — Tue, 26 Dec 2023 19:04:21 +0000

Hegel P30A Preamplifier – Hegel

Bringing Forth Music Just As It Was Intended To Sound
The P30A can be viewed as the conductor of your sound system. With poise and control it conveys all the details, the grandeur, the feeling, and the complexity of any piece of music or any audio that you may be running through your system. Like a conductor, the Hegel P30A brings forth the music just as it was intended to sound. It handles low key jazz, stadium rock and everything in between. Nothing added, and nothing subtracted.

Controlling A Power Amplifier With A Signal That Is As True To The Music As Possible
The P30A is Hegel’s reference preamplifier. Nicknamed “The Conductor” because its job is to control the power amplifier with a signal that is as true to the music as possible. Some say that the preamplifier is the most critical component in a great sounding system, and it is also the hardest to get right. The very low amplitude signals coming from the source are easily corrupted, so in-depth technical know-how and clever engineering are needed to make sure the signal stays the same all the way through the preamplifier. With the P30A Hegel has focused on creating a preamplifier that does just that.

Taking Extra Steps To Ensure Audio Fidelity
When Hegel builds a P30A, they make sure you get the best possible product by going above and beyond the standards of typical preamplifiers. First, they use single pair FET transistors that have no higher order harmonic distortion. Within any batch of transistors, there will always be slight measurement variations. This might be within the bounds of what is considered normal deviations, but for sensitive electronics like this, that simply isn’t good enough. Therefore, Hegel’s founder and chief engineer Bent measures and carefully matches those transistors that have the exact same values. Having perfectly matched transistors is of paramount importance to the performance of the preamplifier, and it makes the P30A sound very smooth and natural, without compromising on the details. Furthermore, the internal layout is designed in a way that makes the signal paths within the preamplifier as short as possible. This reduces the possibility of distortion coming from electrical interference. To further reduce distortion, Hegel also minimizes the number of electrical components the signal passes through. In the P30A the music signal only passes through two transistors and an ultra-low noise volume attenuator. The P30A also uses Hegel’s patented SoundEngine technology. This actively monitors the music signal for corruptions and corrects for intermodulation distortion using a feed forward design. SoundEngine effectively removes distortion in real time as the signal is amplified.

Fully Balanced All The Way Through
All these steps make for a preamplifier that is very quiet and handles the sensitive low amplitude music signal as delicately as possible. Even so, distortion of the signal can still happen, but the P30A has one more feature that takes care of this. The P30A is fully balanced all the way through. This means you have two separate amplifiers, volume controls, and SoundEngine modules per channel. With this design, almost all leftover distortion is canceled out, and what you are left with is a signal that is as close to the original source material as possible.

Multiple Connections For Endless Opportunities
The P30A offers a wide array of inputs and outputs. It features 2 balanced (XLR) and 3 unbalanced (RCA) inputs and a fixed level Home Theater input that allows you to integrate it into a Home Theater system. This input can also be configured to act as a normal input. On the other end you have one balanced (XLR) and two unbalanced (RCA) variable outputs that are all active, allowing you to connect several devices at the same time. One of the unbalanced RCA outputs can even be configured to be a fixed volume output. The P30A also has a 3.5 mm IR-direct input and a 12V trigger output connector. When you add it all up you get a highly versatile, extremely quiet, and natural sounding preamplifier that can be the heart of any high-end audio system. You get the P30A – A truly brilliant conductor of all music.

Product Details:

Fully balanced
Hand matched components
> 130 dB SNR
2 XLR and 3 RCA inputs
Home Theatre input
Remote control: Volume, source, and mute
Inputs: 2 x XLR balanced, 3 x RCA unbalanced and Home Theatre inputs
Outputs: 1 x XLR balanced and 2 x RCA unbalanced outputs
Other connections: 3,5mm IR-direct jack, 3,5 mm jack 12V trigger output
Signal to noise ratio: More than 130 dB balanced mode
Crosstalk: Less than -100 dB
Distortion: Less than 0.005 %
Intermodulation: Less than 0.01% (19kHz+20kHz)
Finish: Black
Dimensions/weight US: 3.8″ x 17″ x 12″ (HxWxD), 15.9 lbs

What to expect in the box:

Preamplifier
Power Cord
Accessory Box
Remote Control
User Manual

Audiolab Stereo & Video Center

The post Hegel P30A Preamplifier first appeared on Audiolab Stereo & Video Center.

Hegel P20 Preamplifier

doug — Tue, 26 Dec 2023 16:01:45 +0000

Hegel P20 Preamplifier – Hegel

Hegel’s Entry-Level Preamplifier
Designing the P20 was not a task Hegel took lightly. Many of the ideas and concepts were taken from its big brother. The P20 serves as an affordable door into the Hegel Reference line of products. Although scaled-down, many of the good characteristics remain – the enormous soundstage, the deep rhythmic bass response, the perfect timing… In short, the sense of being there with the performers.

Hear The Difference, Feel The Difference
The P20 comes with a high-quality system remote control, milled out of one solid piece of aluminum. It has the same bead blasted and anodized surface finish as the preamplifier itself. You can really feel the quality of each part of the P20; not only hear it. There are a total of 5 regular inputs. Both balanced and unbalanced. In addition, a special Home Theatre input allows integration in Home Theatre systems. Finally, there are both balanced and unbalanced outputs as well as a fixed line-level output.

Setting A New Standard Of Price And performance In Preamplifiers
The idea behind the P20 was to offer a more affordable entry into Hegel’s line of separates by setting a new standard of price and performance in preamplifiers. The preamplifier is perhaps the most delicate unit in a sound system. Because the signal levels are so low, even the tiniest levels of noise or distortion smear the image and mask the small details that enliven the music.

A Pioneering Approach To Preamplifier Designs
Brand new technologies, such as Silicon Germanium transistors allows the P20 to achieve the highest quality of sound at such a low price point.
Additionally, high-frequency components that were not originally designed for audio were implemented in the P20. This radical design resulted in an open and natural sounding preamplifier at a very competitive price.

Product Details:

Remote control: Volume, source and mute controlled by the Hegel RC8
Inputs: 1 x XLR balanced, 4 x RCA unbalanced and Home Theatre inputs
Outputs: 1 x XLR balanced, 1 x RCA unbalanced and 1 x RCA recording outputs
Signal to noise ratio: More than 130 dB balanced mode
Crosstalk: Less than -100 dB
Distortion: Less than 0.005%
Intermodulation: Less than 0.01% (19 kHz + 20 kHz)
Finish: Black
Dimensions/weight US: 3.2″ x 17″ x 12″ (HxBxD), weight 22 lbs

What to expect in the box:

Preamplifier
Remote control

Audiolab Stereo & Video Center

The post Hegel P20 Preamplifier first appeared on Audiolab Stereo & Video Center.

NAD Master Series M66 BluOS Streaming DAC-Pre-Amplifier

doug — Thu, 16 Nov 2023 18:14:28 +0000

About the NAD Masters Series M66 BluOS Streaming DAC-Pre-Amplifier

Not only is the Masters M66 BluOS streaming DAC-preamplifier the most advanced preamplifier NAD has ever offered, it represents an entirely new class of hi-fi separate components. In addition to a plethora of inputs, including MM/MC phono and HDMI eARC, the M66 incorporates an audiophile-grade DAC and a high-resolution multi-room music streamer.

Along with the full-bandwidth version of Dirac Live Room Correction, the M66 features Dirac Live Bass Control, allowing independent control of each connected subwoofer, for smooth, consistent response throughout your listening room. The combination of Dirac Live Room Correction and Dirac Live Bass Control enables the M66 to deliver more accurate in-room performance than any two-channel component ever offered.

With its elegant aluminum casework, super-smooth digital volume control, and vibrant 7″ touchscreen, the M66 exudes class and quality. Visually, sonically, and technologically, it’s an ideal match to NAD’s award-winning Masters M23 power amplifier. Of course, the Masters M66 BluOS Streaming DAC-Preamplifier can be paired with any high-performance amplifier.

Music Everywhere
Featuring a high-resolution network streamer based on the acclaimed BluOS multi-room music-management system, the M66 provides access to more than 20 streaming services, including several that offer lossless and high-resolution audio. Using the intuitive BluOS app on a smart device or personal computer, listeners can play music from their favorite streaming service, their personal music libraries, and thousands of Internet radio stations, in resolution up to 24-bit/192kHz. Like all BluOS-enabled components, the M66 has full MQA decoding and rendering capability.

With BluOS, you can listen to music in just one room; or share music over your home network with up to 63 additional BluOS-enabled components from NAD and other hardware partners. The M66 integrates easily with home-control systems from Control4, Crestron, ELAN, RTI, URC, and others. Listeners can also control playback by voice using Amazon Alexa or Apple Siri.

Perfect Response
The M66 integrates Dirac Live Room Correction and Dirac Live Bass Control. Connect the supplied calibrated microphone to the M66’s USB port and then launch the Dirac Live app on a smart device or personal computer. The app will walk you through the calibration process, and then generate correction filters that compensate for acoustic problems like standing waves and unwanted reflections. You’ll enjoy more textured bass, improved tonal accuracy, vastly improved clarity, and more focused imaging.

In a first for a stereo component, the M66 features four balanced and four single-ended subwoofer outputs and integrates Dirac Live Bass Control, which allows independent calibration of multiple subwoofers. Dirac Live Bass Control optimizes subwoofer output in both the frequency and time domains, achieving a seamless blend between the subwoofer(s) and main speakers, and delivering smooth, consistent bass response through the entire listening area, not just in the sweet spot.

Peak Performance
At the heart of the M66’s digital section are ESS Technology’s flagship Sabre DAC and ADC chips. These audiophile-grade designs are known for their exceptionally wide dynamic range, ultra-low noise and distortion, and outstanding time-domain performance.

The M66 is the first component to feature NAD’s innovative Dynamic Digital Headroom (DDH) circuitry. When activated in the BluOS app, DDH eliminates digital inter-sample peak clipping distortion, which can occur during digital-to-analogue conversion with sudden high-frequency transients. The benefits are especially noticeable with percussion instruments: rim shots are more impactful but less strident; cymbals are more realistic and less splashy.

For volume adjustment, the M66 employs an ultra-precise resistor-ladder control circuit. Compared to traditional analogue circuits, the M66’s digital volume control markedly reduces thermal and related distortions, maximizes dynamic range, and more accurately matches left- and right-channel output across the entire volume range.

By default, analogue signals are converted to digital so that functions like Dirac Live Room Correction and Bass Control are available with all sources. However, the M66 has a selectable Analogue Direct mode that bypasses all digital processing, and separate signal paths for analogue and digital sources. Internally, the analogue and digital sections are physically separated and shielded from each other with their own separate power supplies sections, so that analogue signals are unaffected by digital interference when Analogue Direct mode is engaged. This results in distinct volume attenuation, superb left and right tracking and very low noise.

Connect Everything
With its full suite of analogue and digital inputs, the M66 can accommodate all your source components. Vinyl fans will appreciate the M66’s ultra-quiet MM/MC phono stage, which features precise RIAA equalization, high overload margins, and an innovative circuit that suppresses the infrasonic noise that is always present with vinyl playback without affecting bass response. For TV and movie viewing, there’s an HDMI eARC port for connection to an HDTV. Other options include two coaxial and two optical S/PDIF inputs, an AES/EBU balanced digital input, two pairs of RCA line-level analogue inputs, and one pair of XLR balanced inputs.

In addition to unbalanced RCA and balanced XLR outputs for connection to a power amplifier, the M66 has four unbalanced RCA and four balanced XLR subwoofer outputs. The M66’s dedicated headphone amplifier has very low output impedance and very high maximum output voltage, enabling it to drive demanding high-impedance studio monitor headphones. The M66 also has Bluetooth connectivity, with support for the AAC, LDAC, and aptX HD codecs.

Future Forward
The Masters M66 represents the pinnacle of what is technically achievable in a two-channel preamplifier today, and will maintain its technological leadership for decades to come. On the rear panel are two expansion slots that support MDC2, the latest generation of NAD’s Modular Design Construction future-proofing technology. As technology evolves, this will enable M66 owners to add new capabilities simply by inserting an MDC2 module into one of the slots.

Everything about the NAD Masters M66 BluOS streaming DAC-preamp is intended to inspire pride of ownership: the gorgeous 7″ touchscreen, the elegant aluminum casework, and the silky-smooth digital volume control. With its leading-edge technology, unmatched versatility, and superb build quality, the Masters M66 is truly a masterpiece of sound.

NAD Master Series M66 BluOS Streaming DAC-Pre-Amplifier Features:

Ethernet and Wi-Fi networking
BluOS network streamer provides access to over 20 streaming services, including several that deliver lossless and high-resolution audio
Flagship ESS Sabre ES9038PRO DAC and ES9822PRO ADC chips
Innovative Dynamic Digital Headroom (DDH) circuit eliminates digital inter-sample peak clipping distortion
Full MQA hardware decoding and rendering
Support for Apple AirPlay 2, Spotify Connect, Tidal Connect
Seamless integration with smart home control systems such as Crestron, Control4, ELAN, RTI, URC, and others
Support for Amazon Alexa and Apple Siri voice control
Dirac Live Room Correction
Four balanced and four unbalanced subwoofer outputs
Dirac Live Bass Control enables seamless blend between the subwoofer(s) and main speakers, and smooth bass response throughout the listening area
Ultra-quiet MM/MC phono stage with precise RIAA equalization, high overload margins, and infrasonic filter
HDMI port with eARC support
Two optical and two coaxial S/PDIF inputs, one AES/EBU balanced digital input, two pairs of RCA line-level analogue inputs, one pair of XLR balanced inputs
Dedicated headphone amplifier with low output impedance and very high output voltage capability
Ultra-precise resistor-ladder digital volume control
7″ front-panel touchscreen
Elegant aluminum casework
Two MDC2 expansion slots for adding future capabilities
Premium IR remote control included
all features and details listed are preliminary

Audiolab Stereo & Video

The post NAD Master Series M66 BluOS Streaming DAC-Pre-Amplifier first appeared on Audiolab Stereo & Video Center.

Classé DELTA PRE High-end Stereo Pre-amplifier

admin — Thu, 09 Nov 2023 10:26:41 +0000

Classé DELTA PRE High-end Stereo Pre-amplifier – Classé

FIDELITY
Delta PRE is the foundation of your perfect system.

Designed to connect to a range of sources, Delta PRE will extract the highest performance from every recording, whether analog or digital.

Pre-amplifiers provide clean and controlled signals to the power stage. Both precision and perfection are required, and are delivered by Delta PRE.

Network, USB, AES/EBU, coax and optical inputs with optional HDMI
XLR and RCA inputs
Short signal paths to minimize signal interference
Custom-made Navcom® feet absorb and reduce vibrations
High-performance onboard MC/MM Phono stage supports up to two phono inputs
Rhodium-plated connectors for excellent and secure contacts

DESIGN
As the component you’re most likely to touch, the design of Delta PRE matches its exceptional acoustic performance.

Any interaction with Delta PRE is pure pleasure, from the superb cool-to-the-touch materials, to the precise tactile feedback of the volume control.

Touchscreen control reflects Delta PRE’s outstanding capability : pure analog clarity, advanced digital precision, confident, capable power and expressive sound.

Harmony between minimal design and unrivaled performance
Luxurious anodized aluminum body
Adjustable brightness, responsive touchscreen display
Perfectly complements other components in the Delta family

CONTROL
Audiophiles, recording professionals and equipment reviewers trust Classé amplifiers as a source of sonic truth. Delta Series allows listeners to experience that truth in their own homes.

Every detail of the Delta Series is perfected by hand in our unique production facility in Japan to deliver powerful, natural, expansive sound with minimal noise or distortion.

0.25dB volume step precision to find your perfect sound level
Digital domain tone control with Delta PRE Tilt control
Support for mono or stereo subwoofers for better control of bass
Selectable frequency and slope control
Advanced five-band digital domain parametric equalization
Digital bypass mode available to all analog sources
Pass thru mode

Product Details:

OVERALL DIMENSIONS
Width: 17.50 in (444 mm)
Depth (including connectors): 17.68 in (449 mm)
Height (including feet): 4.78 in (121 mm)
WEIGHT
Gross Weight: 41.2 lbs (18.7kg)
Net Weight: 29.8 lbs (13.5kg)
GENERAL
Gain Range: -93dB to +14dB
Channel Matching: 0.05dB
Input Impedance (at 1kHz, BAL / SE): 50kΩ
Output Impedance BAL / SE: 200Ω / 50Ω
Maximum Output Level BAL / SE: 18Vrms / 9Vrms
BYPASS MODE (ANALOG INPUTS, TONE / EQ / SUBWOOFERS DISABLED)
Frequency Response (-3dB, 50Ω source impedance): 1Hz – 2MHz
Harmonic Distortion (measurement bandwidth: 90kHz): <0.0004% at 1kHz <0.0005% at 10kHz <0.0006% at 20kHz
Intermodulation Distortion (measurement bandwidth: 90kHz): <0.001%
Maximum Input Level BAL / SE (at 0dB gain): 9Vrms (+21.3dBu) /
4.5Vrms (+15.3dBu)
Signal-to-Noise Ratio (A wtd) (22kHz BW, ref 9Vrms): 130dB (133dBA)
Crosstalk (one channel undriven) (BAL / SE): -143dB (100Hz), -140dB (1kHz),
-124dB (10kHz)
PHONO SECTION (0DB GAIN, BYPASS MODE, XLR2 IN, MAIN XLR OUT)
RIAA Deviation (20Hz-20kHz): < 0.2dB
Selectable Load for MM Type (47k II): 50pF, 100pF, 150pF, 200pF, 250pF, 300pF, 350pF, 400pF, 450pF
Selectable Load for MC – Low Output: 7.5Ω, 10Ω, 33Ω, 50Ω, 82Ω, 100Ω, 330Ω, 1kΩ
Load for MC – High Output: 47kΩ
MM, MC – HIGH OUTPUT
Gain (1kHz, 20Ω source impedance): 41.5dB
SNR (22kHz BW, ref 5mVrms in): 86dB (93dB A-wtd)
Max Input Level (overload ref 5mVrms): 11dB (20Hz), 23dB (1kHz), 34dB (10kHz)
MC – LOW OUTPUT
Gain (1kHz, 20Ω source impedance, 1kΩ load): 60dB
SNR (20Hz-20kHz): 68dB (74dB A-wtd)
Max Input Level (overload ref 0.5mVrms, 1kΩ load): 12dB (20Hz), 31dB (1kHz), 52dB (10kHz)
HEADPHONE OUTPUT
Power (nominal input. 0dB gain, 32 Ω load): 540mW
Output Impedance: 6.8Ω
FILE FORMATS AND SAMPLE RATES SUPPORTED
USB-F: 44.1k, 48k, 88.2k, 96k (iOS specific)
USB-B: 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192k, 352.8k, 384k DSD64, DSD128, DSD256 (native – requires Thesycon/Classe driver for Windows) DSD64, (DoP
Ethernet: WAV, AIFF, ALAC, FLAC, WMA, AAC, MP3, OGG_VORBIS (max 192k/24b) DSD64, (DoP)
SPDIF (opt, coax, AES / EBU): PCM 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192k / DSD64
INPUT / OUTPUT COMPLEMENT ANALOG IN
BAL / XLR: 2 pairs (XLR2 can be assigned as BAL phono in)
SE / RCA: 2 pairs
Phono RCA: 1 pair
DIGITAL IN
HDMI *(optional): * (HDMI 2.0b w/HDCP 2.2)
USB-F: 1
USB-B: 1
SPDIF Coaxial: 3
SPDIF Optical: 3
SPDIF AES / EBU: 1
Ethernet: 1
OUTPUTS
HDMI *(optional): 1* (HDMI 2.0b w/HDCP 2.2)
BAL / XLR: 5 (configurable: 2pairs+1sub, 1pair+1sub pair,…)
SE / RCA: 5 (configurable: 2pairs+1sub, 1pair+1sub pair,…)
AUTOMATION
DC Triggers In / Out: 2 sets
CAN Bus: 1 set in / out
RS-232 over RJ-45: 1

What to expect in the box:

DELTA PRE Preamplifier

Audiolab Stereo & Video Center

The post Classé DELTA PRE High-end Stereo Pre-amplifier first appeared on Audiolab Stereo & Video Center.

Mark Levinson №5206 Dual-Monaural Preamplifier (Open Box)

admin — Wed, 30 Aug 2023 23:42:04 +0000

With Pure Path fully discrete, direct-coupled, dual-monaural line-level class A preamp circuitry, MM/MC phono stage, and Main Drive headphone output.

Evolution
Derived from the same Pure Path design philosophy as the distinguished Mark Levinson 500 Series products, the № 5206 preamplifier was created to deliver all the performance and quality expected from Mark Levinson with new affordability and exceptional value.

Architecture
The foundation of the № 5206 is its fully discrete, direct-coupled, dual-monaural line-level preamp circuitry, for which the Shelton design team has been awarded two patents. A unique single gain stage mated to a digitally controlled resistor network for volume adjustment maintains maximum signal integrity and widest possible bandwidth. Each of its four stereo line-level inputs—two balanced XLR and two single-ended, using custom Mark Levinson RCA connectors—has its own individual high-reliability signal switching relays. Like the № 500 series components, the Main Drive headphone output employs a preamp output stage specifically designed with the current and power capacity to drive headphones directly, without a separate headphone amp.

A newly designed phono stage features a hybrid gain topology, mating key discrete components from the acclaimed 500 Series Pure Phono stage with low-noise pre circuits for high performance at a lower cost. Also, like the 500 Series, a hybrid active/passive RIAA equalizer employs precision resistors and polypropylene capacitors for exceptional accuracy and sonic clarity. The user can select MM/MC gain and optional infrasonic filter from the setup menu, while capacitive and resistive loading settings are easily accessed from the rear panel. Variable line-level RCA outputs allow system expansion and flexibility.

Digital Audio
The № 5206 delivers outstanding digital audio capability through the Mark Levinson Precision Link II DAC. The class-leading ESS Sabre Pro series 32-bit D/A converter with jitter elimination circuitry and a fully balanced, discrete current-to-voltage converter form the heart of the digital audio processing stage. Six digital audio inputs are provided: One AES, two coaxial and two optical S/PDIF, and one asynchronous USB for playback of high-resolution PCM (up to 32 bit/384kHz) and DSD (up to 11.2MHz) files. The № 5206 includes MQA (Master Quality Authenticated) technology, which enables playback of MQA audio files and streams. A Bluetooth receiver equipped with aptX-HD enables the high-quality Bluetooth playback.

Control
System integration and communication ports include Ethernet, USB, RS-232, IR input, and 12V trigger input and output. A newly designed, solid aluminum IR remote is included with the № 5206. Finally, an internal webpage allows setup, import and export of configurations, and software updates using a PC and standard web browser.

Industrial Design
Robust materials, lavish finishes, and bold geometry are hallmark attributes of Mark Levinson designs. The one-inch-thick, bead-blasted, black-anodized, solid aluminum front panels are machined and contoured to flow seamlessly into the sleek glass display, which itself is recessed into a bead-blasted, clear-anodized aluminum bezel. The iconic hourglass knobs redefined with a gently curved profile softly transitioning into a rounded front. With meticulous details, including, debossed top cover vents, screen-printed logo and legends behind the glass panel, and custom machined aluminum Standby and Menu buttons, and matching feet, the № 5206 exudes elegance and style. The № 5206 is proudly designed, engineered, and precision-crafted in the USA.

№5206 Highlights

Pure Path Class A Design
Main Drive Class A Headphone Out
Home Theater Processor Pass-Thru Mode
Class A High Pass Subwoofer Filter
MQA Full Decode Certified
Bluetooth Audio Input Including Aptx-HD Support
Mark Levinson 5Kontrol APP
Precision Crafted In The USA

What’s in the box?

Power Cord
Owner’s Manual
Custom Aluminum Remote Control

Specifications:

ANALOG LINE STAGE

Gain: 8dB maximum, single-ended outputs, 14dB maximum, balanced outputs
Output Overload: >7.5V RMS, single-ended outputs, >15V RMS, balanced outputs
Frequency Response: 20Hz to 20kHz, ±0.03dB,
Total Harmonic Distortion: <0.003%, 20Hz to 20kHz, [At unity gain volume setting, 2V RMS single-ended/4V RMS balanced out]
Signal-To-Noise Ratio: >93dB, 20Hz to 20kHz, wideband, unweighted [At unity gain volume setting, referred to 2V RMS single-ended/4V RMS balanced out]
System Gain: Selectable; 80Hz, 2nd order (12dB/octave)

PHONO STAGE

RIAA Frequency Response: 20Hz to 20kHz, ±0.3dB
Infrasonic Filter: Selectable; 20Hz, 1st order, (6dB/octave)

MOVING-MAGNET MODE

Input Resistance: 47kΩ
Input Capacitance: Selectable; 20, 70, 120, or 170pF
Gain: 39dB at 1kHz
Total Harmonic Distortion: <0.01%, 1kHz, 2V RMS output, <0.05%, 20Hz to 20kHz, 2V RMS output
Signal-To-Noise Ratio: >80dB, 20Hz to 20kHz, wideband, unweighted, referred to 2V RMS output
Maximum Input Level: >190mV at 1kHz, >1.6V at 20kHz

MOVING-COIL MODE

Input Resistance: Selectable; 37Ω to 1000Ω
Gain: 69dB at 1kHz
Total Harmonic Distortion: <0.01%, 1kHz, 2V RMS output, <0.05%, 20Hz to 20kHz, 2V RMS output
Signal-To-Noise Ratio: >68dB, 20Hz to 20kHz, wideband, unweighted, referred to 2V RMS output
Maximum Input Level: >6.5mV at 1kHz, >19mV at 20kHz

DIGITAL-TO-ANALOG CONVERTER STAGE

Output Voltage: 5.6V RMS at 0dBFS, maximum volume, single-ended outputs, 11.2V RMS at 0dBFS, maximum volume, balanced outputs
Frequency Response: 20Hz to 20kHz, +0/–0.05dB [with 44.1kHz/16 bit signal], 20Hz to 20kHz, +0/–0.02dB [with 192kHz/24 bit signal]
Total Harmonic Distortion: <0.0025%, 20Hz to 20kHz, 3V RMS single-ended output [with 44.1kHz/16 bit signal], <0.002%, 20Hz to 20kHz, 6V RMS balanced output [with 44.1kHz/16 bit signal], <0.002%, 20Hz to 20kHz, 3V RMS single-ended output [with 192kHz/24 bit signal], <0.0017%, 20Hz to 20kHz, 6V RMS balanced output [with 192kHz/24 bit signal], <0.004%, 90kHz, 3V RMS single-ended output [with 192kHz/24 bit signal], <0.003%, 90kHz, 6V RMS balanced
Signal-To-Noise Ratio: >92dB, 20Hz to 20kHz, wideband, unweighted, with 44.1kHz/16 bit signal [referred to 3V RMS single-ended or 6V RMS balanced output], >98dB, 20Hz to 20kHz, wideband, unweighted, with 192kHz/24 bit signal [referred to 3V RMS single-ended or 6V RMS balanced output]
Sample Rates/Bit Depth: PCM: 32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, or 384kHz; up to 32 bits
DSD: Native or DoP; single, double, or quad speed (2.8, 5.6, or 11.2MHz)

HEADPHONE OUTPUT

Total harmonic distortion: <0.04%, 20Hz and 1kHz, 2V RMS output, 30Ω load, <0.1%, 20kHz, 2V RMS output, 30Ω load
Output overload: >3.3V RMS, 30Ω load
Signal-to-noise ratio: >88dB, 20Hz to 20kHz, wideband, unweighted, referred to 2V RMS output

GENERAL

Analog input connectors

2 pairs balanced line-level inputs (XLR)
2 pairs single-ended line-level inputs (RCA)
1 pair single-ended moving-coil phono inputs (RCA)
1 pair single-ended moving-magnet phono inputs (RCA)

Digital audio connectors (№5206 only)

2 coaxial S/PDIF inputs (RCA)
2 optical S/PDIF inputs (Toslink)
1 balanced AES/EBU input (XLR)
1 asynchronous USB input (USB-B)

Output connectors:

1 pair single-ended line-level outputs (RCA)
1 pair balanced line-level outputs (XLR)

Control connectors:

1 RS-232 port (DB-9)
1 Ethernet port (RJ-45)
1 USB port for firmware updates (USB-A)
1 baseband IR input (⅛”/3.5mm phone jack)
1 programmable 12V DC trigger output, 100mA maximum (⅛”/3.5mm phone jack)
1 programmable 12V DC trigger input (⅛”/3.5mm phone jack)

Power consumption:

Power on: 70W
Power on (headphones connected): 85W
Normal standby: 65W
Power Save standby: 4W
Green standby: <0.4W

Dimensions/Weight Unit only:

Height: 4.96″/126mm
Height without feet: 4.50″/114mm
Width: 17.25″/438mm
Depth, enclosure only: 18.00″/457mm
Depth, with knobs and rear connectors: 19.25″/489mm
Weight: 34 lbs/15.4kg

With packaging:

Height: 13.63″/346mm
Width: 24.25″/616mm
Depth: 29.00″/737mm
Weight: 48 lbs/21.7kg

The post Mark Levinson №5206 Dual-Monaural Preamplifier (Open Box) first appeared on Audiolab Stereo & Video Center.

Rogue Audio RP-9 Preamplifier

admin — Wed, 30 Aug 2023 23:37:58 +0000

The Rogue Audio RH-5 headphone amplifier brings our groundbreaking RP-X technology platform to the personal audio world. The new RH-5 will deftly drive the most demanding headphones with a clarity, richness and tube smoothness that must be heard to be believed. Beyond its remarkable performance and design, the feature rich RH-5 provides a wide variety of connectivity and user selectable listening options. Ultra quiet, powerful and sublimely musical, the RH-5 offers a superb new option for high end headphone users.

Features include three pairs of RCA inputs and one pair of balanced XLR inputs. Headphone outputs are provided via 3 pin and 4 pin fully balanced outputs as well as two 1/4″ TSR headphone jacks enabling a shared listening experience. Three gain settings allow the output to be matched for either high, medium or low sensitivity headphones. An easy to read OLED display elegantly communicates component settings and volume. The display can also be turned off if desired. The seven button remote allows you to turn on the RH-5, change volume, select source and mute output as well as dim the display.

The RH-5 is not just a superb headphone amplifier, it can also be used as the cornerstone of your two channel audio system. Offering both balanced and single ended preamplifier outputs, the RH-5 will also do a wonderful job of driving your preferred amplifier and speakers. An optional phono board also allows you to play your favorite records through either the headphones or loudspeakers. The onboard MM/MC phono has user adjustable gain settings of 43 and 58 dB to accommodate most popular cartridges. A wide variety of loading options also means your favorite cartridge can be configured to sound its very best.

General Features

* Four 6H30P tube mu-follower design

* Ten function remote control

* OLED display (defeatable)

* Home Theater bypass/Unity gain inputs

* Three pairs of RCA line level inputs

* Two pairs of fully balanced XLR inputs

* One pair of fixed outputs

* Two pairs of RCA variable outputs

* Two pairs of fully balanced XLR outputs

* Processor loop

* Mono button

* Heavy duty gold plated RCA inputs

* Tube based high power headphone amp

* Massive power supply

* Slow start turn on sequencing

* Auto mute at turn on/turn off

* Detachable IEC power cord

* Fully tested, burned in and auditioned

* 3 year limited warranty (6 months on tubes)

* Proudly hand crafted in the USA!

Specifications

* Tube complement: 4 x 6H30P tubes

* Frequency response: 5Hz – 170KHz +/- 1 dB

* THD: <0.1%

* Gain line stage: 14 dB (20dB XLR)

* Rated output: 1V

* Maximum output: 30V

* Output impedance: <10 Ohms

* Dimensions: 18.5 ”W X 4.5 ”H X 17” D

* Weight 30 pounds

* Shipping weight 35 pounds

* Power requirements 120/240V – 50/60Hz

The post Rogue Audio RP-9 Preamplifier first appeared on Audiolab Stereo & Video Center.

Rogue Audio RP-7 Preamplifier

admin — Wed, 30 Aug 2023 23:37:43 +0000

With a perfect blend of tube smoothness and an almost unbelievable level of detail and transparency, the new RP-7 essentially redefines what a reference level tube preamplifier can achieve.

The RP-7 is our first balanced preamplifier designed on the cutting edge RP-X hardware and software platform and every aspect of the RP-7 design is aimed at maintaining near perfect signal integrity. Beyond the computer optimized circuit topology, all of the capacitors, resistors and other critical parts are of ultra-high quality assuring the highest sonic integrity. The sophisticated electrical design is based on pure class A tube amplification with mosfet output buffering to provide huge drive along with a super low output impedance.

Beyond the excellent sound, the feature rich RP-7 provides all of the functions demanded of a luxury hi-end preamp. Included are a home theater bypass, processor loop, mono button, defeatable display, slow start circuitry, and a host of other features. A full function remote provides additional convenience. Two pairs of XLR balanced inputs and three pairs of RCA line level inputs allow for numerous source components while two pairs of XLR balanced outputs along with two pairs of RCA variable outputs facilitate a wide range of output connectivity. Also included is a high power tube based headphone amplifier capable of driving even the most difficult headphones.

The attractive industrial design includes an easy to read OLED display that further enhances the preamp’s sleek and elegant appearance. The display provides all relevant information in large easy to read azure tinted characters. The ultra-high quality tactile buttons and knobs further add to the exclusive feel of the RP-7.

General Features

* Four 12AU7 tube mu-follower design

* Ten function remote control

* OLED display (defeatable)

* Home Theater bypass/Unity gain inputs

* Three pairs of RCA line level inputs

* Two pairs of fully balanced XLR inputs

* One pair of fixed outputs

* Two pairs of RCA variable outputs

* Two pairs of fully balanced XLR outputs

* Processor loop

* Mono button

* Heavy duty gold plated RCA inputs

* Machined aluminum faceplate and knobs

* Tube based high power headphone amp

* Massive power supply

* Slow start turn on sequencing

* Auto mute at turn on/turn off

* Detachable IEC power cord

* Fully tested, burned in and auditioned

* 3 year limited warranty (6 months on tubes)

* Proudly hand crafted in the USA!

Specifications

* Tube complement: 4 x 12AU7/ECC82 tubes

* Frequency response: 5Hz – 100KHz +/- 1 dB

* THD: <0.1%

* Gain line stage: 14 dB (20dB XLR)

* Rated output: 1V

* Maximum output: 30V

* Output impedance: <10 Ohms

* Dimensions: 18.5 ”W X 4.5 ”H X 17” D

* Weight 30 pounds

* Shipping weight 35 pounds

* Power requirements 120/240V – 50/60Hz

The post Rogue Audio RP-7 Preamplifier first appeared on Audiolab Stereo & Video Center.

Rogue Audio RP-1 Preamplifier

admin — Wed, 30 Aug 2023 23:37:27 +0000

Elegantly simple yet technically sophisticated, the RP-1 is our latest tube preamplifier based on the innovative RP-X platform. Stunning in both performance and design, the RP-1 provides all of the features you need for a truly high end system. Boasting outstanding specs and remarkable sonics, the RP-1 sets a new benchmark in affordable performance and functionality.

Beyond its superb preamplifier capabilities, the RP-1 offers numerous features to further enhance your listening experience. The onboard MM/MC phono has user adjustable gain settings of 43 and 58 dB to accommodate most popular cartridges. A wide variety of loading options also means your favorite cartridge can be configured to sound its very best. The discrete 1 Watt headphone amplifier will thrill you with its smooth and refined sound. Other features include home theater inputs for easy integration into your theater system, two pairs of variable outputs and a pair of fixed outputs. The seven button remote allows you to conveniently access volume, balance, selector and mute functions from your listening position. The elegant appearance of the RP-1 is further enhanced by an easy to read OLED display that provides volume, balance and source information in large easy to read characters. The display can also be turned off if desired.

General Features

* Two tube mu-follower design

* Multi function remote control

* OLED display with on/off

* Home Theater bypass/Unity gain inputs

* Four pairs of line level inputs

* One pair of phono inputs

* Two pairs of variable outputs

* One pair of fixed outputs

* Gold plated RCA jacks

* Machined aluminum faceplate and knobs

* 1W headphone amp

* 44/56 dB MM/MC phono stage

* RIAA equalization within 0.1 DB

* User adjustable cartridge loading

* Slow start turn on sequencing

* Auto mute at turn on/off

* Detachable IEC power cord

* Fully tested, burned in and auditioned

* 3 year limited warranty (6 months on tubes)

* Proudly hand crafted in the USA!

Specifications

* Tube complement: 2 x 12AU7/ECC802 tubes

* Frequency response: 1Hz – 75KHz +/- 1 dB

* THD: <0.1%

* Gain line stage: 7 dB

* Rated output: 1V

* Output impedance: 750 Ohms

* Gain phono stage: 44dB, 56dB

* RIAA accuracy: +/- 0.1 dB

* Phono overload: 40mV

* Headphone amp: 1W (32 ohms)

* Power consumption off <1W

* Power consumption on: 23W

* Dimensions: 15.25 ”W X 14.5 ”D X 3.2” H

* Weight 16 pounds

* Shipping weight 22 pounds

* Power requirements 120/240V – 50/60Hz

The post Rogue Audio RP-1 Preamplifier first appeared on Audiolab Stereo & Video Center.

Moon North 791 Stereo Pre-amplifier and Network Streamer

admin — Wed, 30 Aug 2023 23:32:15 +0000

The Moon North Collection introduces a revolutionary audio experience, surpassing traditional preamps with its cutting-edge analog preamplifier, the Moon 791. This collection signifies Moon’s return to new releases, featuring a high-end phono stage and streaming DAC, exemplifying a steadfast commitment to quality backed by an impressive ten-year guarantee.

Moon 791 Features:

Seven digital inputs, including HDMI ARC, and three analog inputs.
Two outputs with independent configuration for variable or fixed volume control.
MDE2 technology, re-clocking FPGA, and flagship DAC supporting resolutions up to 32/384 and DSD256.
“Super quiet” phono preamp catering to both moving-magnet and moving-coil cartridges.
Galvanic isolation for enhanced performance and minimized interference.
Roon Ready MiND2 network player for Bluetooth and AirPlay 2 compatibility.

Moon BRM-1 Remote Control:

Integrates intelligent Bluetooth technology with Moon’s precision.
Pioneering touch controls and visual feedback for an unparalleled user experience.
Remarkable build quality with meticulous attention to detail.
Operates flawlessly without the need for line-of-sight interaction, providing seamless convenience.

Inputs:

Six digital inputs.
One HDMI with ARC.
Three analog inputs, including MM/MC Phono Stage.

Moon 791 Specifications:

Analog Input Impedance: 22 kΩ
Maximum Gain (Line Level): 10 dB
Phono Input Gain: 40 dB / 54 dB / 60 dB / 66 dB
Phono Input Capacitance: 0 / 100 pF / 470 pF
Phono Input Resistance: 10 Ω / 100 Ω / 1 kΩ / 47 kΩ
Output Impedance: 50 Ω
Crosstalk: –125 dB
Frequency Response: 2 Hz – 200 kHz (+0 dB / –3 dB)
Signal-to-Noise Ratio (Analog Preamplifier): 120 dB
Dynamic Range (Digital Input, Fixed Output): 125 dB
Total Harmonic Distortion + Noise: 0.0004%
Intermodulation Distortion: 0.0003%
Power Consumption (Idle): 25 W
Power Consumption (Full Power Standby): 22 W
Power Consumption (Low Power Standby): 5 W
Shipping Weight: 41 lbs / 19 kg
Dimensions (Width x Height x Depth): 18.95″ x 4.03″ x 17.66″

The post Moon North 791 Stereo Pre-amplifier and Network Streamer first appeared on Audiolab Stereo & Video Center.