GM-57 (pair)
Original price was: 3000,00 $.2900,00 $Current price is: 2900,00 $.
Pair very rare tube GM-57 (UB-180) triode. After listening to this tube, the desire to listen to anything else disappears. Near equivalent 300B
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1 in stock
Description
Very rare tube GM-57 triode with a direct-heated oxide cathode designed for power amplification in low-frequency stages. In the USSR, there was a powerful tube that analog 300B. It was called first MS-3, then M-457, then GM-57, and finally acquired a marking UB-180.
Technical specifications:
- Heating voltage: 4V
- Filament current: 2 ± 0.2mA
- Anode voltage: 750V
- Slope: 5.0 ma/V
- Rated Gain: 9
- Maximum power dissipated by the anode: 50W
- Limit fluctuations in filament voltage: 4 ± 0,4V
- Anode voltage limit: 750V
Operating time not less than 2000 hours.
Additional information
| Weight | 0,26 kg |
|---|---|
| Dimensions | 19,5 × 5,7 × 5,7 cm |
| Brand |
NEVZ |
| Packaging |
Product from factory group packaging |
| Socket type |
4 – Pin PLK 811 300B 2A3 |
| Condition |
New product |
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