I thought I'd put my 2 cents in as I have LFR1100v4's as well. I have had them hooked up to a mid-level Yamaha receiver for pre/pro purposes only and now a Marantz AV7701 pre/pro. The difference is very audible with the Marantz giving much more detail and range. I'm sure with a better receiver such as a NAD or Arcam the difference would not be as radical. I've had my speakers hooked up to two different amps with my big bad class A/B a clear winner over my class H. The MSRP of the A/B is more then double the class H though. Of course receiver power isn't going to work. Separate components all the way with LFR's!
