For all your valve power supply needs, we have the great GZ34, 5U4 and EZ81 etc... 5U4G / 274B rectifier valveHigh current power rectifiers. Very popular in valve amps. 5Y3 rectifier valveThe 5Y3 is a medium-power directly heated rectifier valve introduced by RCA in 1935. 6X5 rectifier valveThe 6X5 is a medium current Full-Wave rectifier valve. Audio Note`s favourite. EZ80 rectifier valveLow/medium current rectifiers valve, good for pre-amps and low power amplifiers. EZ81 rectifier valveLow/medium current rectifiers valve, good for pre-amps and low power amplifiers. GZ34/5AR4 rectifier ValveHigh current power rectifiers. Highly used in medium power valve amplifiers. GZ37 rectifier valveThe GZ37/CV378 is a tall version of a 5AR4/GZ34 valve. High current rectifier.