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Hai Wei (Mr. Lim)
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Master-3（2015 Edit）
Real Balanced ACSS Power Amp
Supports XLR and ACSS input

Master-3（2015 Edit）is improve from the older Master-3 model , addition two high quality R cores separate power supply for the signal gain stages , and adjust some design , improve the detail and keep the sound stage more better .

Fully balanced design, the gain stages and pre-driver stages work in class A, built with discrete analog stages without any OPA or coupling caps in the signal channels.
The output transistor 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.
2 analog inputs: XLR / ACSS
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 supply the gain stages.
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 plate to avoid interference.

S/N Ratio
>115DB

Gain
+30 DB

Output
250W @ 8ohm
500W @ 4ohm
1000W @ 2ohm

Output Level (Max,RMS)
58V

Input sensitivity
4V RMS @ XLR
2mA RMS @ ACSS

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

Frequency Breadth
20Hz - 20KHz ( <0.25DB )

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
150W 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