I like class d ncore hypex mcintosh using it in mi1502.marantz,atmosphere, Roland and other major manufactures using it.crutchfield let's you try stuff for 90 days they have some class d.it takes a very expensive tube amp to equal d sonic 2200 watts pascal. He may have a trial period. Fosi sell 48 volt gan per supply 80$ amazon or fosi audio direct.then thier mono amp 120$ . 250 watts into 4 ohms.low distortion amps. You don't need to change tubes.my favorite vtl 7.5 tube pre with ss amps.alot agree with this hybrid combo.enjoy the search.
