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Classic 8.0b Stereo Power Amplifier

General:

8.0b is an improved version of 8.0 of which their appearance is the same.

Improved areas include circuit structure, parameter, chosen components, arrangement on circuit board, inside construction and electromagnetic radiation, etc. All of these make it more rationalized and reach an anticipative design purpose.

8.0b uses PCB with copper foil of 2 ounces. It adopts large area ground screen and widens fused stannum at the place where large current go through. It employs Japanese Toshiba high power transistors, Rubycon MUSE electrolytic capacitors, German WIMA MKS capacitors and customized polystyrene capacitors and metal film resistors from appointed factory. The resistors that are relevant to closed loop adopts metal film resistors with error tolerance of 1%. High power resistors are Japanese KOA foil non-inductive ones. R-shaped 260W transformer is specially designed. There are double power supply system, electronic filtering in voltage amplifier and full-function IC protection circuit.

The front panel is made of 10mm thick sheet aluminum. All chosen transistors were compared over and over again before they ware adopted.

Sonic presentation: full and mellow at low frequency, rich timbre texture at mid -frequency and high frequency with charming musical richness. It can match many kinds of loudspeakers.

Technical:

Output Power (rms): 150W (8ohm),  240W(4ohm)

Total Harmonic Distortion: 0.005% (1 to 10 KHz 120W RMS 8ohm)

Frequency Response: 5Hz-140Khz (-3db 120W RMS)

Gain: 28.7db

Load Impedance: 4ohm-16ohm

Input Sensitivity: 1.27V (0db)

Input Impedance: 56Kohm

S/N: =95db (Without weight)

Input Interfaces: RCA 1group

Static Consumption: 55W

Dimensions: 430mm(W) X 80mm(H) X 385mm(D)