I have old Anthem Statement A2 and A5 amps running my 7 channel bed. I didn't want to spend that kind of money on the Atmos channels though, so I looked at something more reasonably priced. When the 5000X arrived, I decided I wanted to do a basic test on all the channels before I put it in place so I ran the mains off the various channels instead of the A2. This was not a real serious comparison as I don't have an ABX switcher or anything like that, so it's mainly anecdotal audio memory speaking here - but I didn't note any terribly obvious change in sound when the mains were running off the Outlaw. I'm not going to pronounce that the Outlaw was outright just as good as the Anthems, but my conclusion was that if I ever needed to replace one of them without spending several thousand dollars, more Outlaw equipment would be on my list.