What Class A is better? SUGDEN FPA-4 or PASS LABS XA-25
Oh I don't know, just the inventor of the first Class A circuit design. If it weren't for Sugden, it's more like WHO IS PASS?
Class A operation goes back to the 1920s.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.
