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Tube Amp Doctor - 5U4GB Premium - Rectifier Tube

Save $10.00
Original price $99.00
Current price $89.00

Straight glass envelope tube with slow start feature

The 5U4GB has a straight glass envelope. This type has been widely used in U.S-made guitar amps from the 1950s to the 70s. The 5U4GB has a slow start feature, which protects output tubes from high voltage peaks when you switch the power on.


Q: When does a tube become a Premium Selected tube?

A: All tubes labeled Premium Selected have passed the following tests:

  • Plate Current (PC) and Amplification (TC)
  • Low Noise Test
  • Microphonic Test
  • Sonic Tests
  • Shock Tests
  • Listening Tests
  • Shorts & Leakage Tests

TAD Premium Selected tubes are guaranteed for a period of 6 months (according to terms of warranties) for the quality criteria mentioned above.

RohS Compliant

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