Slow adaptation of KT150 by amp mmanufacturers

David, I did the SE upgrade bit with my Ref 150. I think it made a noticeable improvement. I don't think the SE upgrade for the Ref 75 is terribly expensive. Oregonpapa is in 7th heaven with his Ref 75 SE. Check his posts on the Forum.

Jgottget - How would you compare these against the Silver 88s which also could use the KT150 tube? I know the Silver 88 is no longer being produced, however I'm sure there are still some dealer demos out there to be had...

Dennis Had has made some 12 watt single ended amps with the KT150.

I didn't get a chance the hear the 88's, my dealer only had the Mid Mono's on hand, which sounded really nice. The Mono 120's have bigger transformers and more power but a higher output impedance than the 88's. I had a similar time trying to find a KT-150 amp. Quicksilver has a good reputation and getting a new amp made for the KT-150's for $3,995 seemed like a pretty good bet.

Fear of KT150 update (formerly Fear of KT120 update): Stick KT150s in anything that can handle KT120s…or kt88s or 6550s it seems…my ongoing careful and utterly accurate thoroughly informal ridiculous survey has noted the reporting of exactly ZERO transformer failures or any other issues with the additional heater filament or any other alleged stress purportedly engendered by doing this. Be paranoid, be clinical, wait for the sadly overpriced updates offered by pretentious Mid-Western wire box vendors…but if you can't see 150s everywhere these days you're in an alternative universe. "But the amps made specifically for 150s are MORE BETTER"…of course they are…kaCHING...