Title：	2x125W Dual Channel UPC2581 Amplifier Chip A1943 C5200 Power Amplifier Board
Specification:	• Working voltage: AC-36V (AC) • Output power: 2-125W (Class A and B) • Magnification: 32x • Output Impedance: 4-8Ω • Channels: 2 • Harmonic Distortion: <0.002% •Product size: 168*85mm
Material configuration:	• Transistor, 2SD669, A1930, C5171, A1943, C5200 •IC chip: UPC2581 (voltage amplification), UPC1237 (speaker protection). • relay acts as horn protection • Japan black gold steel capacitors for power supply filtering • Germany capacitor decoupling • Five-ring metal film resistor, error 1%.
Circuit design features:	• High-speed diodes are used for power rectification, and Japanese chemical audio capacitors are used for filtering •Voltage amplification adopts HiFi-level dual-channel voltage amplification chip UPC2581, which is not sold separately in the market, and has no corresponding indicators and parameters. Tens of thousands of power amplifiers are using integrated circuits. The UPC2581V pre-driver adopts a low-distortion classic circuit inside, including 2-channel input stage and voltage amplifier stage, excluding the booster stage, and the internal twin triodes have excellent consistency, eliminating the trouble of bad pairing under amateur conditions, easy Get HiFi-grade sound quality and easily surpass those so-called famous phone lines. The connection of the external circuit of UPC2581V is also more flexible, giving the designer more room to play. •The final stage current amplification adopts A1943/C5200 or IRFP9240/IRFP240 pair tube • There is a quiescent current adjustment potentiometer on the board to adjust the quiescent current according to the requirements •The horn protection circuit is performed by the UPC1237 chip, and the Japanese relay protects the horn
Package:	1x Power Amplifier Board