I also owned the P/E's for 6-7 years. I think Marty's observations are spot on. It's interesting that someone mentioned running Art Jota's on Fidelio's. I tried them on Parsifal's, and it was a no go. Not even close to enough power. I owned two amps at the same with P/E's. I had the Accuphase A-50V, and CJ Premier 8's. As Marty mentioned, warmer sounding tube amps can be problematic. The 8's were warm, and did not have a detailed, articulate bass. The bass (on P/E's)could be rather undefined, and a bit boomy. The Accuphase, on the other hand, really grabbed hold of those woofers, and was much better in the low frequencies. That said, it was the CJ that stayed over the A50V, just because of what only tubes (IME)can do. I think a more linear, neutral tube amp is the way to go for P/E's. If you have a small room, I could argue the case to go with the Fidelio's. Pair them with a good solid 30 or so watt tube amp, and you could be set. I know someone who runs them with a sub, and is quite content.