• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Anybody help identify these tubes


2006-11-23 8:46 pm
Hi, I have been given some Toshiba tubes marked 5B they are 7 pin and come out of a Sony Tape recorder, I was also given a pair of output transformers for these (8ohm sec 2.5k primary).

I would like to build a small iPod amp for my daughter using these.
Can anybody help me with any technical info on the pinouts/specs?