bigkidz,
What do you mean? My pre-amp was upgraded to the (latest) version 4 years ago, while Stan Klyne was still active. Did you mean you added 6SN7 tube(s) to the Klyne and made it better? Honestly, I doubt that. If you meant you had another pre-amp with 6SN7 tube(s), I already have a NAT Plasma (with 16 tubes) and I am not looking for another tube pre-amp.
Thanks for your message,
lectronjh50
lectronjh50