Thanks to all for all the info. I tested a Krell kav250 amp,Adcom 555 amp and a Crown xls 2000 amp.
I had to adjust master volume control up for each amp.What I found was the more power the amp had the better the sound was.
The Adcom had nice bass and highs,the Krell was a little better,and the Crown amp had nice bass and great highs.
My conclusion was, the more power an amp has does not raise the volume level but , enhances the sound. So I just turn up the volume.