[ Prototype ] 211/845 PP tube amplifier mono block x 2 * 22 ~ 50W

This is prototype product, 211Pushpull tube amplifier, input voltage 100V, you can order output power from 22W to 50W, in prototype product, I designed output power at 22W only.

AC heater for better musical sound and the hum level is only 0.2mV, very very quiet.

It can be worked with 211 and 845 tube without any adjustment as changing tube. But work at the best with 211 tube.

If you see this amplifier was sold out, the price for ordering the same one is 4200USD plus shipping fee, tubes are not included.

Prestage tube and driver tube is 717A, can be use 6SH7, 6SJ7 as replacement. Retififer tube is 5U4, 5AR4, 5R4GW vv...v..

Response frequency : 10Hz - 50KHz
Hum level : 0.3mV
THD: 5% @ 22W (211 tube)