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Audio-GD Master 10 (2021)

Real Balanced ACSS Non Negative Feedback Integrated Power Amp
Applied "Linear Fidelity" Technology
Soft Start Power Design
Can custom order built in DC blocker

Fully balanced design, the gain stages and pre-driver stages working on class A , built by discrete analog stages without any OPA or coupling caps in the signal channels.
The output transistors stages work in high idle current state. The Diamond Cross output stage design avoids "switch distortion" as well as class A amps.
Non- feedback ACSS analog amps .
Applies 24 pieces of ON Semiconductor transistors . Supports 250W X2 (8 Ohms) output.
The capacitance of the whole machine reaches as high as 140,000 uF, with two 750W circle core and two R cores transformers (Total 1500W) and separate power supplies for the right channel and left channels.
A total of 4 groups of high-quality class A parallel connection PSU's power the gain stages. To achieve a high S/N, the control circuit is powered with separate regulators.
Four channel 99 steps digitally controlled relay-based volume control avoids channel imbalance and improves sound quality.
5 analog inputs: RCA X2, XLR X2, ACSS X1
Applies all audiophile grade components, including DALE resistors, WIMA caps, custom order NOVER (UK brand) caps, all audiophile grade input & output sockets and gold IEC socket.
Static storage mode control software for avoid disturb sound quality , the MCU output once control data and save in the perform parts ,then stop output data until users next operation.

Specifications
S/N Ratio
>115DB

Output
250W @ 8ohm
500W @ 4ohm

Output Level (Max)
58V

Input sensitivity
0.775 V RMS @ RCA
1.55V RMS @ XLR
2mA RMS @ ACSS

Input impedance
47K ohm @ RCA
94K ohm @ XLR
<10 ohm @ ACSS

Frequency Breadth
20Hz - 20KHz ( + / - 0.01DB )

Channels cross
> -120DB

Channels imbalance
< 0.05DB

Power Requirement
1 Version 100-120V AC 50/60 Hz
2 Version 220-240V AC 50/60 Hz

Power Consumption
130W static @240V or 120V

Transformer Power
1600W (4 transformers)

Package Weight
Approximately 40KG

Dimensions
48CM(W)*44CM(D)*19CM (H) (MM, Fully aluminium )

Accessories
Power cord X1

Operating Temperatures
+5 °C to +40 °C

Operating Humidity
5 % to 90 % (without dew)