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Audio-gd products had
design and test based on the AP SYS-2722 (The top-drawer
professional equipment in world)
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 .
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 24 pieces of ON Semiconductor ¡§the King of transistors¡¨ MJL4281/4302. Supports 250W X2 (8 Ohms) output.
The capacitance of the whole machine reaches as high as 140,000 uF, Two 750W (Total 1500W) core transformers. Separate power supplies for right 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.
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. Applies the round-corner style chassis which has lower syntony, or vibration. Between the transformers and signal amps resides a thick metal panel to avoid interferance.
Memorizes all settings and resumes the last setting when powered on.
Sound Characteristics: Very neutral and neuter, truly delivers the sound of source, doesn't add any color. Careful selection of source components is recommended.
1, Master-10 has extremely high fidelity; its SQ is neutral. It can show how good or how bad a recording or source is.
2, It is better not to stack gear on top of each other, if necessary to stack Master-10 on other gear, place a piece of paper or other insulating material on top of the other gear, because Master-10 has conductive aluminium feet.
3, Attention must be given to matching suitable power and signal cables.
of our preamp and power amp from John Darko.