Description

Introduction: TU-2 refers to the WCF circuit, and modified and added a feedback circuit, which can effectively promote low impedance and high sensitivity headphones. Adopt CRCRC Series voltage filtering and voltage stabilization, AC filament, PCB filament wiring push tin processing, to ensure that the 6N6 large current can pass without heating. This version can also be upgraded to 3 PCS 6922 electronic tubes directly instead. The cathode current is 10mA. PCB Size: 160mm*100mm Input voltage: AC 0---170V Filament voltage: AC 0---6.3V The tube can use 1 PCS 6N2 + 2 PCS 6N6. Also can use 3 PCS 6922. NOTE: We have DIY kit or finished board (Optional) ◆ DIY kit ---- All parts need you to solder and test it. (Default price is not include tubes.) ◆ Finished board ---- All parts have been welded and tested OK. (Default price is not include tubes.)