I guess my first answer would be to establish yourself with a good tube surplier..There are a handfull of good reliable sources that many of us use..These tube guys take a lot of time to pair and match tubes with double and triple testing..It may cost a couple bucks more but you can pretty much get the best quiet clean tubes around..
Names I might suggest to start with;
Jim Sautter ( audiogon member )
Andy ...(Vintage tube Services )
Jim McShane ( Jim McShane tubes )
This is at least a good starting point.Good Luck..
Names I might suggest to start with;
Jim Sautter ( audiogon member )
Andy ...(Vintage tube Services )
Jim McShane ( Jim McShane tubes )
This is at least a good starting point.Good Luck..