This is the bare PCB of a stereo tube push-pull( PP) power amplifier making use of the all-the-time best sound tube 2A3.The board has put heavy attention on the signal routing to optimize the performance.
The amplifier features the input gain responsible by 6SJ7 tube, 6N8P( or 6SN7) for phase splitting and finally two 2A3 on each channel in push-pull configuration.
This is a PCB for stereo amplifier.
The board is built with premium quality, including thick copper, gold plated conducting surface and two-sided solder resist for maximum reliability. The PCB is as thick as 2.4mm !
Input sensitivity : 1Vrms
Close-loop gain : 22dB
Input Impedance : 100K
Power transformer requirement :
- 280VAC x 2 to 320VAC x 2 100mA
- 6.3VAC x 2 1.5A
- 2.5VAC x 2 5A
- 5VAC x 1 3.5A
PCB dimension : 330mm x 220mm
PCB thickness : 2.4mm, 2 oz ( 75um thickness !!) copper deposition.
We provide schematic to buyers by EMAIL.