Product Details:

PCB size: length 180mm * width 140mm 12AX7/2 small signal amplifier tubes (the following tubes can be used to replace ECC83, ECC803S, 7025, 5751) Follow the output tube 12AT7 or 12AU7/2 (can replace ECC81, 6201, or ECC82 with the following tubes) Power supply requirements: filament power supply DC 12.6V (2A), high voltage power supply DC 260V/70mA (200-280V is acceptable, 260V is recommended) Note: Does not include tubes

Package List:

1 × Power Preamplifier Board （Not included tube）