Self-bias topology in Audio Innovations 800

hey guy i have the audio innovations s500 intergrated ,,and i changed the front pre tube 12ax7,,and i was told this amp is self biasing,,so no need to,,this guy is a pro with audio innovations he may know more about your amp,,,,,,,,,,, [email protected]

Thanks a lot!

By the way, it sounds great with Mullard EL34 tubes and even with Tesla E34L tubes.