Pro audio amp vs. residential amp

I bought it from Proaudiostar through eBay.

I purchased a Crown XLS 1500 amp at Guitar Center (30 day money back) about 3 weeks ago.It has boat loads of clean power and is dynamic and detailed. I like it, and it cost $350
as they matched Amazons price. It's quiet, I don't hear the fan at all. Low noise floor,it's not a perfect amp, but it is very good. My 2 cents. Well worth the $350 for sure...

I also purchased the Crown XLS 1500, not primarily for 2 channel stereo, but for a small rehearsal PA system. On a whim, I decided to try it in my main living room 2 channel system. I currently use a pair of Channel Islands D-200 class D with a pair of SP Tech Timepiece 3.0 speakers, which are low efficiency but highly revealing speakers. The Crown sounded like a tin can. Then I hooked up an old pair of cheap high efficiency Tannoy PBM speakers and they sounded just fine. My point is that if you have really revealing speakers with neutral upstream components, then the Crown may not be a good idea. If you have less expensive speakers that are colored or warm sounding by nature, then the Crown may work just fine. It's totally speaker dependent.

My experience has been the Crown XLS1500 sounds superb with all my speakers. I've found the amp to be extremely revealing and delicate with gobs of power. A full and totally open sound.
Very similar to my el34 based amp, but with much better grip on the bass. One thing I will say about the Crown, it needs about 400 hours,to totally open up.
It will drive 2 ohm loads with 775 watts on hand, so hard loads are a piece of cake. This amp give you a type of sound that should not be had for $350, it is an exception. As always of course YMMV!

ADS L780
Vienna acoustics Haydn
B&W DM2a transmission lines