Quad Classic ll 40 amps - Tube rolling/biasing?


I've just brought a pair of classic 40 amps and although I love the sound I'm considering upgrading the Kt88 Sovtek's. The manual says tube changes should be done by the dealer or Quad service and says nothing about biasing etc.
Does anybody have any experience of tube rolling these amps and the bias settings/requirements

Thanks

Peter
rennie_perth

Showing 1 response by bannister

I just bought the same set of monoblocks from Caxton Audio in Brisban. Enquired about biasing and whether or not directions are included for biasing and so on. They bias automatically. Assume you bought these from Simply Hi Fi. Ask Win. He's usually quite good about info and advice. Also, as part of the deal, I bought a quad of the Genalex Gold Lion KT88s. I currently use the same Gold Lions in a conrad-johnson MV-60SE amp (that has been converted to triode mode). They are very wonderful tubes.

I would be tempted to upgrade the 6SH7s as well. If you e-mail me, I might be able to help you out there.