Lamp single-stroke monoblocs handmade on a powerful triode GU-48. The device works in pure class A without feedback.
If you summarize the available data on this lamp (or its analogue-833 lamp), then the following characteristics will be obtained
– internal resistance Ri – 4 kΩ
– amplification factor (mu) – 35
– characteristic steepness – 8.75 ma / V
- the maximum power dissipated on the anode is 400 W

Specifications

Output power (Watts):
4 ohms – 72
6 ohms – 57
8 ohms – 50
Frequency response (-3dB) – at full power – 20Hz ÷ 31.5kHz;
Sensitivity – 550mV;
Background level – (-85dB);
No general feedback.
High-level equipment
– Mundorf Silver Gold transition capacitors
– Furutech acoustic terminals
- input RCA terminals of the company Furutech
- components from Solen, Black Gate (FK), Jensen, Kiwame were also used
Dimensions 650-320-260 mm (L-W-H)