I wouldn't go down this road till you hear the system with the Denon, it has more than enough power, although I did like my system when I ran onn's A1400-8 on it awhile ago. The bass from the M80s was outstanding and the highs were cleaned up considerably at high volume levels, it also sounded much more open and less compressed but that was with a $4000 amp. I like the idea of used amps from audiogon etc. or pro amps but you have to be wary of the fans they run for cooling, that extra bit of noise could bother some people.
Like I said I wouldn't go down this road till you try it with the Denon. I am in no hurry to get an amp inspite of the benefits I heard with the big A1400, my 3808 runs everything just fine and sounds great, for that extra little benefit is hard to justify the costs.
