Pilnius SA-103 vs. Modwright KWA 150SE

Have not heard either. I do own a Plinius SB-301 amp, which is Class A/B. Very happy with it: superb dynamics, excellent bass reproduction and control, wide and accurate soundstage to the point where you can isolate the players, midrange slightly warm, treble detailed but not at all in your face.

I would expect the Class A SA-103 to sound even better, and might have gone that route myself if I had more efficient speakers and a smaller room.

"So I am hunting for the elusive "perfect amp". I know... what a fool I am."

Hey, don't disregard the valor of the attempt! Sometimes that's as important as the result.

Well almost, anyway. I could have opted for a Plinius SA-Reference over the SB-301, but I couldn't justify spending almost twice as much for a small incremental improvement in performance. Even if the Salon 2s are proving that they deserve it...

OK, that's enough of that, per my bank account.