Scooping up an ole spider valve 112 tonight and it needs some new tubes and the pots cleaned up. I know matched sovtek 5881wxt are must for this amp and chinese 12ax7s were recommended but sino 12ax7s are pretty much non-existent right now. I've got a pair of matched sovtek 12ax7wa on hand, will it work or nah? I'm experienced with ss and tube builds but I don't mess with hybrids much.
What kind of quality are the filter caps in these amps? I usually make a habit of changing them out with high quality ones while I'm in there if they come with low quality ones from factory. I got a schematic but no part list unfortunately.
Thanks!