KT66s in place of KT88 tubes


I expect there will be a change in bias, and a reduction in power. But on the basis that lower power tubes generally produce more faithful sound, can one put KT66 tubes in an amp usually requiring two KT88s per channel? I'm thinking about a pair of Quad II/forty push-pull monoblocks.

dogberry

Showing 2 responses by jond

Yes the KT66, and KT77, are better sounding tubes than the KT88 but definitely check with the manufacturer before you fry your amp!

@weebeesdad what jjss49 said is essentially correct though I'd say the blurring and loss of transient speed is overstated. To me EL34s, KT66s and 77s just sound more like tubes, higher powered KT variants might as well be solid state.