Grover Gardner wrote:
Contra Roscoe, I would suggest some tube rolling before you try modifying the amp. EL34s vary widely, and some can sound flat and dry, especially the cheap Chinese ones. The vintage ones are best but extremely expensive and difficult to find in good condition. The Psvanes (or Treasures) are very nice but will cost from $250-400 a quad, depending on the grade. But they will transform your amp. If you are on a budget I would suggest a quad of Svetlanas, which will set you back $80. They were very well made and have a warm, forward mid-range and slightly rolled top. The Mullard copies were too bright and edgy for my taste. I haven't tried the Tung-Sols.
Hey Grover,
Thanks for the advice! I found Psvanes on ebay for around $150/quartet. Are these not the high quality versions you referred to?
While I was waiting for responses from the forum, Yen audio on ebay recommended some Genalex tubes and I bought them. I probably should have waited for some more responses before I bought, but I guess I'll just see what happens.
Chris