This is hi quality bass guitar amplifier based on Dynaco Ultra Linear Push Pull amplifier with 6CA7 EL34
Ua=460V, Ug1=-32V
Frequency range: 10Hz-70kHz @ Po=1W, 3dB; 25Hz-20kHz @ Po=25W, 1dB
Distortion: 40Hz 1.0%, 1kHZ 0.8%, 15kHz 1.3% for full continious power 25W:
Hum and noise: -57dB
Intermodulation: less then 1% at full continious power 25W
