• 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.

Tianjin 300B mesh plate


One of our Audio Guild (here in Melbourne, Australia) members has been using these tubes in his own design driving Lowther TP1 enclosure.

IMO these tubes are wide bandwidth and will benefit from a good output transformer. Sovtek in this set up is just a midrange tube. Svetlanas have had reliability problems. Although I have listened to WE tubes, I did not have the opportunity for a comparative evaluation.

It is too early to comment on reliability. These tubes have been in service for 3 months