Many thanks guys I didn't think there should be any issues but someone told me the 7308 wouldn't work that it had too much gain or something. I think it must of been something else other then gain as I thought the output was the same in all of them but some had different heater plate current or something, I haven't heard back from Conrad Johnson yet but I did email them as well.
Conrad Johnston LP70s amp 6922 tube upgrades
Hello, I am looking for CJ LP70s owners out there that have experience with the above mentioned amp and upgrading the original 6922 tubes to say 7308's and PQ version tubes! Are there any issues with doing this as I have been told that the JAN spec tubes will not work in the amp??? But I thought the 7308 and the other JAN PQ versions etc would drop right in. Can anyone out there clarify this or tell me of there experience with doing so? many thanks D