Hi all. I'm currently using a 3.1 setup and have been itching to pick up a relatively inexpensive external stereo amplifier -- I'm mostly interested in improving the experience from my mains during music listening. Current equipment is: Monitor Audio Silver RX6 mains (6 ohm, 90db sensitivity) Monitor Audio Silver RX Centre (6 ohm, 90db) Martinlogan Dynamo 700 Subwoofer Marantz SR5006 Receiver - 100W (20Hz - 20kHz, 0.08% THD, 8 ohm, 2ch driven) I am happy with the sound I currently experience with this setup, but can't help but wonder if I'm missing out by powering these speakers with just my AVR. Is it likely that I'd notice a difference if I connected an external amp? If so, and if the consensus if that I would benefit from one, I guess I've been looking at a few different ones: A local dealer carries the Parasound Halo A23, which I really like a lot and would likely be my preferred choice. I've been looking on ebay, however, and see a used Denon POA-8200 in great condition for about $400. Does anyone know anything about the Denon? As far as I can tell, it was their flagship 2-ch channel POA sometime in the mid-late 90s, made in Japan, looks really well-built, but I can't find much in the way of reviews/opinions of it online. Wondering if it's a good buy or if $400 is too steep. Emotiva is an option too -- I know their price/performance ratio is great, and I have a friend with an XPA-200 powering his Martinlogan ESLs. The Emotivas sound great, but I'm not a huge fan of their aesthetics. Any advice to make the choice a little easier would be greatly appreciated. I can also get a discount the Marantz MM7025 or PM8004 through my employer, but I'm not sure how either of those would rank with the others I'm considering. Thanks in advance!