



JJ Electronics
JJ KT77 Power Vacuum Tube
Stats for Nerds
- Type
- Beam power pentode
- Base
- Octal (8-pin)
- Max plate voltage
- 800 V
- Max plate dissipation
- 25 W
- Max screen voltage
- 600 V
- Heater
- 6.3 V / 1.4 A
Choose options
Stats for Nerds
- Type
- Beam power pentode
- Base
- Octal (8-pin)
- Max plate voltage
- 800 V
- Max plate dissipation
- 25 W
- Max screen voltage
- 600 V
- Heater
- 6.3 V / 1.4 A
Stats for Nerds
- Type
- Beam power pentode
- Base
- Octal (8-pin)
- Max plate voltage
- 800 V
- Max plate dissipation
- 25 W
- Max screen voltage
- 600 V
- Heater
- 6.3 V / 1.4 A
All RUBY™ Tubes come already Matched with a 6 Month Warranty There is no extra charge for this service. Our Magic Parts matching process is very exact and our tubes are matched within +/- 1 mA (mille amp) of each other.













