I'm convinced: my Power Conditioner was ruining...

I'm convinced: my Power Conditioner was ruining my system's acoustics.

I heard it all, but ignored it. I'm in a brown/black out prone area so I've been over cautious using an APC 1500VA powering a Monster HTS 5100 and distributing to my system from there.

Yesterday I was moving things around and I ran the system direct to the APC. F'n AMAZING improvement!!

Within an hour I had it on Craigslist and today it went out the door and I ordered out for Chinese on the new owner.

But for the last 6 hours I've been reading reviews for PS Audio, Richard Gray, Running Springs, etc. Am I nutts? Should I rely on the clean music I'm getting? Why do I feel a conditioner will help when clearly the HTS didn't?

In part I feel it's because I don't understand power enough; I know the APC produces a stepped sine wave. I know that's not good for my use, but does it produce that only when acting as a backup? Short of a regenerator would anything eliminate the square sine?

If you had $600 to spend and you were in my position would you spend it on music and chinese (perhaps Indian next time) or a replacement conditioner?

Thanks All.