AUDIO-GD MASTER-10 MK2 Class-A Balanced Amplifier ACSS 2x 500W 4 Ohm

AUDIO-GD MASTER-10 MK2 Class A Balanced Amplifier ACSS 2x 500W 4 Ohm

The Audio-GD Master-10 MK2 is an impressive Symmetrical Amplifier in Class A, capable of delivering great power to accompany the most demanding speakers.

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Integrated amplifier / Class A Balanced ACSS

Audio-GD MASTER-10

MK2 Edition
Linear Fidelity & Non Negative Feedback

For this MK2 Edition of its Master-10, Audio-GD has updated its Class A amplifier to offer even better audio measurements. The brand integrates Linear Fidelity technology to the output circuits and Non Negative Feedback to the amplifier in general. This particular design allows to obtain a linear response curve as well as a very low level of distortion, for a sound reproduction of a very great transparency and this whatever the output level and the reproduced frequency.

An integrated amplifier of great power

Audio-GD presents us once again the quintessence of technology in audio with this MASTER-10 MK2 amplifier with a more than neat and clean architecture.

The famous brand of high fidelity audio offers us here an amplifier in the most accomplished form possible with outstanding performances: it delivers 2x 250W under 8 Ohm or 2x 500W under 4 Ohm.

Each product of the brand is scrupulously tested with one of the most powerful systems in the world: the Audio Analysers 2700 Series from Audio Precision.

Uncluttered, extraordinarily efficient connectivity

The MASTER-10 MK2 has 5 analog inputs: 2x RCA / 2x XLR / 1x ACSS. The output is of course on 2 speaker terminals, where you just have to plug your speakers to enjoy.

The result is unmistakable: great musicality, thanks to exceptional dynamics and a rich sound that is extremely detailed in every way. We can tell you that you're approaching - if not reaching - perfection with this HiFi device.

Arrière Audio-GD MASTER-10

An outstanding amplifier

Balanced Class A / R-Core / ACSS / Integrated

This MASTER-10 MK2 is equipped with no less than 4 transformers including 2 R-Core for a total of 1500W, 140.000uF of very high end capacitors, and 24 very high performance ON Semiconductor transistors for the output stage.

This amplifier is also designed around a purely symmetrical discrete Class A ACSS circuit, with a separate power supply to avoid any interference or electromagnetic disturbances on the signal.

The volume control is also optimized, having 4 channels and 99 steps, digitally controlled by relays to avoid any channel balance problem and improve the sound quality.

Audio-GD Master-10 MK2 Amplificateur Class A Symétrique ACSS 2x500W 4 Ohm


Audio-GD has its own signature technology called ACSS for "Audio-GD Current System Signal". Thanks to the expertise and know-how of the firm, this technology offers a sound less colored, more detailed, and of a neutrality without equivalent..

Each technical engineer of the brand is, in addition to being experienced, a HiFi and Audio enthusiast like you and us. To know, when the ACSS output is used, the XLR and RCA outputs are switched to MUTE.

Class A

A class A amplifier has the particularity of having all its active components always in conduction. They fully amplify the input signal, thus limiting the harmonic distortion on the output signal. The output signal of the Master-10 MK2 is therefore of excellent quality, due to the absence of this famous sinusoidal crossing distortion.

Class A

Shielding & Anti-vibration system

The Master-10 MK2 uses a solid Aluminum alloy chassis to prevent transformer eddy currents from interfering with the audio circuits. Thus, the internal design of the Master-10 MK2 is separated into two sections by aluminum plates. The Ac power cable is also shielded.

Vibrations are also taken into account in order to promote the best possible sound reproduction. Each gain channel is placed under a 5mm thick aluminum plate, which allows both to dissipate heat efficiently but also to avoid vibrations.

Technical characteristics

Product typeAmplifier
Amplifier typeClass A
Inputs2x Balanced stereo XLR
2x Single-ended stereo RCA
1x Balanced stereo ACSS 
OutputsSpeaker terminals
Output power2x 250W @ 8 Ohm
2x 500W @ 4 Ohm
2x 1000W @ 2 Ohm
SNR> 115dB
Input sensitivity1.2V RMS @ XLR
Frequency response20Hz - 20kHz (0.01dB)
Input impedance94kOhm @ XLR
< 10 Ohm @ ACSS
Crosstalk> -120dB
Supply voltage220-240V AC 50/60Hz
WeightApprox. 40kg
Housing materialAluminum
Dimensions480 x 440 x 190mm
Package1x Audio-GD Master-10 MK2
1x Power cable
1x Metal remote control
Data sheet
OutputSpeaker terminal
Channel2 (Stereo)
ClassClass A / AB
Amplifier chipN/A
Power (W)500.0
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AUDIO-GD MASTER-10 MK2 Class-A Balanced Amplifier ACSS 2x 500W 4 Ohm
The Audio-GD Master-10 MK2 is an impressive Symmetrical Amplifier in Class A, capable of delivering great power to accompany the most demanding...

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