AUDIO-GD A1 Balanced Power amplifier ACSS XLR 2x125W 8 Ohms

AUDIO-GD A1
Following Audio GD's tradition of excellence, the A1 is completely handmade. This is a fully balanced power amplifier incorporating ACSS technology.

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Reference : 13066
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Shipping date: 16-12-2019.

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Audio GD A1

Discrete symmetrical power amplifier ACSS XLR

Following Audio GD's tradition of excellence, the A1 is completely handmade. This is a fully balanced power amplifier incorporating ACSS technology. Its analog amplification stage based entirely on discrete components in a non-feedback system The gain stage and input stage for their work in class A. A custom designed power supply and inspired from technology reserved for higher budgets ensures a sound reproduction of exceptional purity.

A fully balanced amplifier

GD audio amplifier A1 ACSS

Designed for a  sound reproduction of surgical precision, the A1 Audio-GD is a fully balanced power amplifier. From the analog inputs to the output terminals, the signal is continuously protected from environment-related noise and interferences.

Double power supply stage

stereo power amplifier linear double power transformer

Each channel has its own power stage with high precision torrique transformer.

This configuration benefits the purity of sound at all levels, whether the separation of the channels (in particular with an extremely low  channel imbalance of 0.01dB), soundstage depth or simply neutrality the whole final restitution.

In addition to this feature, the A1 power is also remarkable for its strength and robustness. Theses power stages are indeed built from components designed to withstand very high power (WIMA capacitors & Nover, Resistors KOA ...). The total capacitance of the device thus amounts to 80,000 UF (ie 40,000 uF per channel).

These elements allow the amplifier to operate under contained constraints, ensuring not only great finesse and fine accuracy in restitution, but also an exceptional compatibility with different types of loudspeakers available on the market.

XLR & ACSS input stage

ACSS audio amplifier GD

The A1 has a balanced XLR input for use with very advanced preamps while preserving the qualities of all the previous elements of the chain.

It is also equipped with a ACSS input, Audio-GD proprietary technology based solely on discrete components in a non-feedback design. The principle works through a stage current gain rather than the usual voltage gain. This significantly reduce the steps needed to complete the amplification, which significantly reduces alterations of the signal.

With the ACSS technology, A1 provides its exceptional purity, with a coloring of minimum sound and high linearity of the signal. This will especially preserve the dynamic without removing the natural look of her, avoiding rendered too bright and aggressive.

A precise output stage

An output stage amplifier A1 Audio GD

A1 amplifier stage consists of two blocks each made from four transistors. Each transistor is designed to suport up to 150 Watts and 15 Amps. All transistors are balanced and operate in class A mode.

The cross diamond design plays an important role in the non-feedback system at the outputs of the amplifier, which further increases the accuracy of the signal.

Parts supplied
Power cordx1
Characteristics
TypePower amplifier
ArchitectureSymmetrical
Number of Channels2
Power2x 125W sous 8 Ohms
2x 70W sous 4 Ohms
32V Max RMS
InputsXLR
ACSS
OutputsBornies pregnant
total capacitance of the device80 000 uF
THD<0.0008% (Measured XLR 1W @ 8ohm)
Gain+22dB
input sensitivity3V Rms (XLR)
2mA RMS (ACSS)
Input impedance94K Ohm (XLR)
<10ohms acss="" td="">
Scanning20Hz - 20 Khz (-0.5dB, XLR 1W 8 Ohms)
20-50kHz (-3dB, XLR, 1W 8 Ohms)
Equilibrium of channels<0.01dB
Food220-240V
Power consumptionStatic idle 50W @ 230V
DimensionsHeight: 80mm
Width: 360 mm
Depth: 3600 mm
HousingAluminum
 
Data sheet
InputACSS
InputXLR
OutputSpeaker terminal
ColorBlack
Channel2 channels (Stereo)
ClassClass A / AB
Power (max)125W
 
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Average votes
5.0 / 5
1 reviews
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 5/5
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Audio gd a1
Bon voila il est rodé...
Que dire il est branché a un nfb1 amp et nfb3dac avec un tres bon cable xlr adieu les rca et acss c'est super clair précis ,ça bouge il faut monter le son tellement c'est aérée..en biamp avec un autre ampli diy connex pour les graves car j'ai 4fois 25cm de carbone de chez davis.....du bonneur adieu rotel ,atoll,....
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This review has been posted for AUDIO-GD A1 Balanced Power amplifier ACSS XLR 2x125W 8 Ohms
 
AUDIO-GD A1 Balanced Power amplifier ACSS XLR 2x125W 8 Ohms
Following Audio GD's tradition of excellence, the A1 is completely handmade. This is a fully balanced power amplifier incorporating ACSS...

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