Tung-Sol or other USA 1 5U4GB Balanced Rectifier Vintage Vacuum Tube AT1000 tested tNOS 1954 - 1966

This listing is for ONE full-wave rectifier vacuum tube. It has a black base, black or grey plates, and one side, bottom, or top getter. Raytheons and Tung-Sols used two side getters!  We have various vintage USA brands, presently Tung-Sol, Raytheon, and Sylvania. The RCA and GE tubes are a little more popular right now, and they can be found in separate listings.

Your tube has been fully tested on an Amplitrex AT1000 with like new, NOS results. Here's what that means: to qualify for this listing, the forward voltage in the two sections must be balanced within 10% of each other, and that voltage must be between 21 and 28 Volts for both sections. Unbalanced and used-testing tubes are available in a separate listing at a significant discount.

This tube cannot be used in places where a 5U4G is specified - it will supply too high of a rectified voltage to the circuit.  Conversely, using a 5U4G where a 5U4GB is specified will shorten the life of the 5U4G as too much current may pass through.   Of course, we always recommend using the tube that your amp was designed for.

The Amplitrex tests for gas, shorts, and leakage as well. The tube you receive is guaranteed against failure for 60 days after purchase.

OPTIONS:
Want a regular white box? $1 extra
Want the test results recorded on your box, too? $3 extra
Want two (or more) tubes that match one another within 1 Volt (about 5%)? $5 extra per tube

Comfortable using a replaced guide pin? Save $1 (and get the replacement guide pin included, installed!) Comfortable with a (previously) loose base repaired with high-temperature friction tape? save $2 per tube