version A: Tube: 6E2*2, Russian 6H8C*2, LINLAI 2A3T*2, LINLAI 845*4, LINLAI 5U4G*4

version B: Electron tube: 6E2*2, COSSOR 6SN7*2, 300B*2, 845*4, PSVANE 5U4G*4

version C: electron tube: 6E2*2, COSSOR carbon crystal tube 6SN7*2, noble 300B*2, COSSOR carbon crystal 845*4, PSVANE 5U4G*4

Performance parameters:

Rated output power: 50W*2

Frequency response: 18Hz--30KHz

Total harmonic distortion: 1% (1kHz)

Input sensitivity: 500mV--2000mV

Input impedance: 100K

Output impedance: 4, 8

Signal to noise ratio: 93dB

Tube: 6E2*2, 6SN7*2, PSVANE 300B*2 (can be customized 2A3 push 845, 211,805, etc.), PSVANE 845*4, PSVANE 5U4G*4

Size: L310*W450*H255 MM (including tubes height)

   The new design scheme and new technical innovation adopt 6SN7 + 300B + transformer double 845 full vacuum tube rectification (high voltage vacuum tube rectification and medium voltage vacuum tube rectification are supplied separately to ensure sufficient power supply). Unlike the traditional 845, 805, 211 and other high voltage vacuum tube amplifiers, the high voltage is connected after startup (the worst is the high screen voltage vacuum tube amplifier. In order to reduce the cost, transistor rectification is used) After instant connection, the high voltage of about 1000V is directly applied to form a high-voltage shock wave, which will accelerate the damage to the electronic tube and shorten the service life! The machine has carefully made innovative design, new design concept and new technological transformation, so that after the vacuum tube is started and the electronic tube temperature rises normally, the high-voltage transformer of about 1000V will undergo a delay of about tens of seconds to 3 minutes (depending on the weather and temperature in the season and place) After the high voltage is connected, it is rectified by the vacuum tube and slowly rises from 0V to a stable high voltage of about 1000V. The sound rises slowly from small to large according to the high voltage. This slow rise of high voltage has a very good effect on prolonging the service life of the electronic tube! This time, the double 845 parallel tube is carefully designed to combine class a amplification. The advantage of single ended parallel tube is that the power output is doubled and it is a class a worker Unlike the push-pull machine, which works up and down, and then outputs the synthetic signal through the transformer, so the single end is more popular with enthusiasts than push-pull! The carefully designed circuit concept can be said to be the high-quality circuit design of 845 vacuum tube amplifiers on the market! In addition, the beautiful 6e2 level cat's eye green light column is added to jump up and down with the music frequency to increase the mood and atmosphere of the listener (if the listener is not in the mood and atmosphere, it is not interesting to listen to anything) and monitor whether the input and output signals of the vacuum tube amplifier are normal to judge the role of the fault at that level。
version A




version B

version C