SET 45 Amp Driving Dynamic Speakers

Lewinskih01,
You have the right attitude and I wish you well. Sometimes you have to ignore well meaning warnings based on preconceived notions. When I became interested in SET amplifiers the warnings were, limited music genre, pleasant but very colored midrange, very little  bass or high frequency information. All were completely wrong and in hindsight total nonsense. The past 7 years with my SET 300b based system  has provided the most  vibrant,open,transparent, organic and emotional involvement I’ve ever experienced. I wish you the best of success moving forward with your project.
Charles,

I've often been amused by the comments in Stereophile about how an SET can measure so poorly and yet sound so good- and further that no-one seems to know why. I have to assume that they did not ask any designers when that comment was made.

IMO low distortion is pretty important, and as long as you don't push them hard SETs can have distortion lower than any solid state amp. And when you ask a little more power, you get the 2nd harmonic which is a lot less offensive to the ear (even in large quantities) than the higher ordered harmonics of solid state! So its no surprise why SETs have a following.

I’ve only heard SETs with horns at an audio show. I recall an Art Audio amp with PX25s driving Avantgarde speakers (Duos?) that sounded REALLY good. I don’t doubt that 45s et al can sound even better with horns.

What I am saying is that those who don’t want horns (for space, budget, WAF, or other reasons) can still get a lot of the virtues of SETs with well matched, higher efficiency, dynamics. That was not at all the impression I got before trying it for myself. I know there are always trade offs, but, in my case, I have a hard time perceiving any significant ones.

Horns are not an option for me, at least right now. Maybe there’s an amp out there that can give me the the "magic" of my 45s AND greater dynamic headroom, with my current speakers. I’m not chasing after it, though.

"Technical facts" by no means tell the entire story.  As has been mentioned on this site numerous times,  measurements and specifications play a fundamental role primarily in determining electrical matching/suitability of audio components.  So it is an effective screening tool. I'm unaware of anyone here disputing this point. What determines if someone will be happy with chosen components is listening to them following the initial screening. It's a two stage process. For my purposes listening is required to make judgements regarding the merits of audio products. Others may utilize alternative methods. 
Charles,