I have 4 804's on order and already have my HTM1. When I first hooked up my HTM1 the midrange was very raspy and hard edged to the point I almost called my dealer. After about 15 to 20 hours it started smoothing out. I hooked to the left channel, also played in 5 channel stereo, and used DVD-A and SACD's. Now (maybe about 100 or more hours) it sounds fantastic. I have never noticed a speaker that needed breaking in the way the HTM1 did. I sure that the 804's will be about the same.