• 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.

Tube Change: Regulator and Rectifier

Hi All

I have a bit of a unique setup and can't find a straight answer for the 300B's I have a preamp that used a 300B for a Rectifier and a 12ax7 & 300B for the regulator portion. I know its basically using a Ferrari engine in a pinto lol

Question, swaping out to lower end 300B's for the rectifier and regulator, will that effect the sound? It came with a pair of factory matched and tested PSVane WE300B replica's. Chaning the 12ax7 to a mullard f91 or others makes a lovely difference in the sound.

Thoughts on swapping out the very expensive 300b's would be nice please