Got a small SEP amplifier that I would like to try a different set of tubes in. Need a single 12ax7 or variant. Prefer RCA or a Sylvania 5751. Also need a pair of el 34,6ca7,6550 or KT 88. Would like to obtain a pair of National or Siemmens EL 34. used tubes are fine, as long as they are strong.
Regards
Mister Pig