My MC-2A3 preamp uses 3 6922/6DJ8 types. I modified the preamp (sounds great by the way), which has resulted in the center (critical) 6922 running a filament voltage close to 7V (the other two are about 5.9V). As a result, I am going to run a PCC88/7DJ8 in that position.
I have several already, but am looking for more. Let me know what might be available out there (but not too outrageously priced). Other than reasonable price, balanced triodes are also desired.
I don't have much in the way of cash to purchase, but I do have a variety of tubes (mainly small signal and 6V6s) and equipment laying around for trade (for example, see some of my other listings, plus there is more).
I could also use some 2A3 and 6922 pairs, but these are not as critical for sound (the 2A3 less so) so anything reliable will do.
You can email directly to baileyler(at)comcast(dot)net.