Need highly transparent detailed amp---how does Pass XA25 compare to Gamut D100/D200 MKIII

atmosphere---the 45w my JAS Array 2.1 puts out is about the minimum I could use and get the sound levels I want.  I've had 2 of these amps and love the liquid midrange and the palpable 3 dimensional images and everything else I've heard has sounded veiled in comparison.  A couple gainclones have had an acceptable sound so I think I can get (mostly) to where I want to go with solid state.  And as mentioned, I don't want to spend the bucks on more tubes.  It's close to $1000 to get the tubes I want/had for this amp.  And my experiences with class D are the early PS Audio and Wyred4Sound amps and neither moved me at all.  I hear that class D has come a long way but both amps I mentioned have many excellent reviews indicating they may be the sound I'm looking for.  Thanks.

gato?  I haven't heard that one.  I'll look into it.  Thank you

@lcherepkai  45 watts is a lot of power for an SET! Its very difficult to get good bandwidth in an SET with that sort of power, but its pretty easy with a more conventional Push-pull amplifier, and the power tubes are often much less expensive! Our M-60 makes about 60 watts into 8  ohms, but the power tubes for both channels together are only $420.00 and we warrant them for a year. If you had a H/K Citation 2 (refurbished) they make 60 watts also, and the output tubes are only about $140.00 total. That amp is also wider bandwidth than almost any SET, and its certainly lower distortion.

My point here is there are a lot of tube amps out there that may well do the job that could make more power, less heat and less distortion, and very likely sound better at the same time with a lower output tube cost. One limitation nearly all SETs face is that if you really want to hear what they are about, they should be played on a speaker that does not require that they go over about 20% of full power. This is to prevent the higher ordered harmonics from showing up- those harmonics will cause the amp to sound 'dynamic' and they will also cause it to sound 'loud'. With most push-pull amps, the usable power is much greater- often well over 90%, so you get a lot more usable amplifier power for your investment.

atmosphere-----thanks for all the insight.  Truly useful info here is a rare commodity.  And funny you should mention the H/K Citation II as I had a pair of a modern rethinking of that classic design in monoblock form, the VAS Citation II's.  These really are quite nice and, although of the same power rating, were able to drive to moderate levels a pair of BG Corp 520 loudspeakers that the SET JAS amplifier could barely rouse at all.  On speakers more suited to them though, the JAS was quite a bit more revealing of the subtle inner details that make music engaging to me.  With Shuguang Treasure 6CA7's, the VAS amps were luscious and quite detailed and always a pleasure to listen through but the JAS just had more insight.  I like tubes in my source (presently a Raysonic 228 and a Modwright Oppo BDP 83SE with the tubed outboard power supply) but otherwise would like to get back to a solid state amp for full time duty.  Thank you very much for the wisdom