220W 220VA Mono HiFi Power Amplifier Board Of Audio Amp DIY Kits UPC1342V 2SC5200 2SA1942 5200 1943 UPC1342 Double AC 1836VFinished Board

note: 1: DIY kits, need to increase the welding. 2: finished board and DIY kits, no picture shows the main capacitor, (the capacitor needs to buy it yourself) 3: Before the product is powered on, the radiator must be added. 4: power input transformer, you can refer to the picture display. 5:PLEASE NOTE:1 board for 1 channel, 2 channels need to buy 2pcs Product Details: Drive the core UPC1342, Japan production, because the cut-off, and now can only be equipped with a good test or disaemble the inventory module, the effect is still very good Use the Toshiba 2SC5200 2SA1943 transistor Use Japan Sanken 50A bridge rectifiers Beijing 718 copper feet resistance Germany WIMA input coupling capacitor Background Description: UPC1342V is NEC's 90 years to develop the HIFI level of the promotion module, the input level using a more claic PNP differential amplification structure, the circuit frequency response range of 900K, is the current discrete component circuit is also difficult to achieve This level, the protection part is very perfect, there is no extreme cases will be very damaged. Its output power, strong control, cost-effective. You can adjust the quiescent current cla A, sound thick, sound is very Naiting, dynamic is the world's best, low-frequency good Core circuit: NEC company following the excellent performance of broadband low distortion 50w drive circuit UPC1225H, in order to meet the requirements of high power has introduced a new generation of audio driver IC - UPC1342V, the IC in addition to all the advantages of UPC1225H and basically the same external circuit , The output voltage deviation is smaller (± 5mV), the voltage to adapt to a wider range (± 20 ~ ± 70V), to promote the power more abundant Circuit design: The board uses one design, onboard rectifier filter, onboard 1237 protection circuit. Wiring is simple, do not worry about interference problems. This board is UPC1342V push high-power tube structure, the line is simple, the last high-power tube quiescent current adjustable, can output a cla of sound Output power: According to the different power supply voltage, speaker impedance of the different output power 20-150w; when AC35v power supply, you can output 130w * 2/8s, 200w * 2/4 Specifications: PCB size: 150X72MM Power supply range: AC18X2 - AC36X2 Midpoint voltage: 1mV or so Signal to noise ratio: 105dB Noise level: 0.4mV Package Included: 1pcs × Mono aembly board PLEASE NOTE: 1 board for 1 channel, 2 channels need to buy 2pcs

Matching radiator  link:

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