Vintage tube amp tube recommendations please.


I have a Fisher SA-600 that came with new EH EL-34's It sounds awesome matched with my Threshold for bass.
At this time Im looking to upgrade the 12ax7 and 12au7 tubes.
Im looking for current production tubes or NOS or used tubes for fair price.
I dont want to spend more than $10/tube.
I dont need a tube with good bass as this amp will always be run with a SS amp for bass duty.
I switched out the 12au7 mismatched tubes with my yellow stamped Sylvania tubes.This fleshed out the mids better.But Im looking for better :~)
The 12ax7's are a original Fisher and the other I cant tell.
Im looking for a very clean and full midrange that throws a large soundstage.
The amp has 2 rectifier tubes.How important are these? Suggestions/replace?
Thank you.
david99

Showing 1 response by r_f_sayles

David99, Just to make the waters a bit murkier...Elevick really covered this suject well and if you would like a little good reading check out this website. It is well reviewed amongst A'goners. Although he leans away from the highly touted Telefunkens, Joe has a vast experience and knowledge of the tube roll game. Enjoy!

www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html