12 responses Add your response
n80 I’ve had great luck with Cryoset. Original LS16 I believe are 6922 where the MK II went to 6H30. If you’re tubes are original you probably are ready. Unless you’re looking for the best NOS just spend the money and get a new set as they’re not too spendy. Cryo EH 6922 gold pin matched pairs. I think you need two sets. Let them know and they will do a quad match set for you as well.
On a preamp you can get a lot more hours out of your tubes compared to a power amp. You can probably push it out to 4,000 hours but if you don’t have a tester I don’t think I’d chance it.