Assembled UPC2581 Power Dual Channel A1943/C5200 HIFI 2*125W Stereo Amp Board


Parameters:
●Working voltage: AC-42V
● Output power: 2 * 125W ( class AB )
●Magnification: 32 times
● Output impedance: 4-8Ω
● Frequency response: (-3dB): 20Hz-20KHz
●Harmonic distortion: <0.002%
● Zero noise
● Product size: 168*85mm

●Material configuration:
● Transistors, 2SD669, A1930, C5171, A1943, C5200.
● IC chip: UPC2581 (voltage amplification), UPC1237 (horn protection).
●Japan Omron Relay, Japan Chemical Capacitor, Germany Siemens Capacitor, Japan Five-ring Metal Film Resistor, Error 1%
Circuit design features:
●Power rectification uses high-speed diodes, filtering uses Japanese chemical audio capacitors
●Voltage amplification adopts HiFi-level two-channel voltage amplification chip UPC2581 developed by NEC for SONY.
● The final stage current amplification adopts the Toshiba A1943/C5200 pair tube. The board is equipped with a static current adjustment potentiometer. The buyer can adjust the quiescent current according to his own requirements.
●The horn protection circuit is used by the UPC1237 chip to protect the horn with the Japanese OMRON relay.

Package：
 
1x Assembled UPC2581 Power Dual Channel A1943/C5200 HIFI 2*125W Stereo Amp Board




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