I thought I'd do a test this weekend, adding an external 5-channel amplifier to my HT setup. I was curious whether I would truly hear a difference. BOY OH BOY! OH BOY! I heard a difference. My current setup: Nakamichi AV-10 DD DTS, 100W x5 and 120W x 2 (I've had it more than two years now and it's great.) B&W CDM 1SEs for mains, matching B&W CDM CSE center channel B&W 601S2s for rears; Sunfire True Sub Jr. Pioneer DV-525 DVD player I borrowed a Rotel 1075 (125W x 5) from the good folks at San Francisco Stereo (the Mountain View store, thank you Jonathan Brusco for boxing the floor model and carrying it to my car. What service! Century Stereo could learn a thing or two from you guys). The 1075 must weigh 50 pounds. I struggled to get it into my cabinet. I hooked it up to the Nak's preamps with five Tara Prism connectors supplied by SF Stereo. In running through various DVDs and CDs today, it's clear to me now why folks are so passionate about separates. It's hard to put into words what I heard today, but I would say that my HT speakers sounded new. The rears were much more active and noticeable. And I could boost the volume to the 12 o'clock position without wincing. It almost seemed that my CDM bookshelves equaled the sound of my Nautilus 804s and Classe integrated that I use for music only. Just running the beginning of Close Encounters of the Third Kind (you get both the DTS and the THX opening logos) was really fun. The "Shall We Dance'' scene from The King and I sounded incredible. Tusk from Fleetwood Mac's "The Dance'' took on new life. Roy Orbinson "Black and White Night'' was amazing. I can't believe what I've been missing. I guess the audio in general sounded fuller, more powerful and made watching or listening that much more fun. Too bad this beast of an amp doesn't fit my stand. Would a small amp, maybe only a two-channel, have almost the same benefit by assisting the Nak in the workload?