I recently hooked up a Phase Linear 400 series two (running through the preamp of my Marantz 2285b) to my AR-10pi's and then to my AR-3a's - I instantly could hear a big difference. I would love to hear a pair of AR-LST's. I might have to save my pennies,sell off some other stuff, and buy a pair. Their shape is very interesting - I could make a really neat pair of speaker stands for them.