Hello Tobes, I have the original PH-302 and I wanted to ask your advice on changing the tubes. I see that you're using Sylvania 1968 era. What do you think of Sylvania 1944 army military VT-229/6SL7 GT?
My Cary PH 302 phono amp MM hum?
My Cary tubed PH 302 phono amp sounds great running an Ortofon Rondo Blue through the Moving Coil section but it has developed a hum with my Shure V15 III in the MM input. I have experimented with all the usual suspects that can be related to ground loop feedback. So far nothing has worked. The tubes test perfect. I have the same hum with a variety of cartridges and turntables. Has anyone had this problem with this phono stage? Thanks.
Sharpe
Sharpe