After 20 years, in the market for a power amp

As a temporary variety test, a class D amp with switchable gain may be an option worth considering. The two sets  here are Audio Alchemy and Bel Canto. The Audio Alchemy is really nice sounding and has a 20/26 DB gain switch on the front panel. The Bel Canto is also switchable gain yet the cover must be removed to do so. 

Try the Galion TS A75. It matches anything in the 5-6k I've heard and it's 1.5k. It's very musical and sparkles with plenty of space as others have said. Pretty amazing and they have a generous return policy if you're only auditioning it and decide against it. Just shipping and a 5% restocking fee. Many reviews on you tube-check them out- and overwhelming praise. Unless you can spend a helluva lot more you must try it. You might find yourself saving 4-5k for interconnects and cables.

I like the MOSFET solid state amps that's why I have had a Hafler 9290 and still do. But, in the last two months I have graduated to a JC5 Parasound.  WOW!

The detail is incredible with a smooth top end, bass is much more pronounced at lower listening levels since we have much more power than the Hafler 9290.

I love the sound of JFET - MOSFET amps even more than a Primaluna 400 integrated with higher grade tubes installed.

If you can swing a JC5 , I wouldn't think twice.

Anything John Curl touches is phenomenal, from the vintage HCA-2200ii to the newer JCs at Parasound.

The JCs surpass the older HCAs unless you're handy with a soldering iron 🙂

Why not just fix your current amp? Or do you just want something new? 

Will say MOSFET amps sound wonderful to me, have not had the chance to hear any high end Class D, but have not been all that impressed.