Input using a gold field effect transistor 2N556X 2 differential circuit, and the servo midpoint, so the circuit has a very good stability, debugging is also very simple, as long as the regulation of the output tube 2.2 ohm resistance is 70MV (70MA per channel current ) After a period of time, the current will be slightly higher
The original 6 pairs of MJE15034 / 35 gold field effect transistor 2N556X, more than 20 pairs of matching BC556,546 and heavy material power supply, PCB is 70,000 double copper (kit does not contain earphone seat).
The kit contains the Japanese Omron protection circuit.
PCB size: 185X188, the use of transformers: AC18 to AC25X2
The main capacitor for the ELNA-4700UF-AUDIO 35V main filter capacitor, the United States BI adjustable resistance, the return is 12 1000UF capacitor