By FAR and away the best reproduction from a 2-channel system that I've ever heard came from the Avantgarde Trio and also the Duo Horns with single ended tube units. I've heard everything from the Infinity Reference Standards of twenty years ago, all the big Wilsons, B&W, KEF, Dunlavys, Apogee, big self-powered Meridians, Magnepan, Martin Logan, Vandersteen, Von Swindlers, etc., etc.
Honestly, nothing really comes close to the dynamics, immediacy, transparency, whatever else you can think of. They are the most "live", you are there, loudspeakers that I've experienced in 43 years. Also, with well over 100dB efficiency, anything over 3 watts will light them up. You'll never look at cones, domes and boxes the same way again. You'll wonder why they can sell the sh*t for as much as some of them get, frankly.
I would also like to hear the bigger Acapellas with their ION plasma arc tweeters.
