Thanks for your comments,
I'll take your advice and listen to the NAD 7140, if she sounds better; which is highly likely, then I will keep her. NAD will be a good option if I need the preamp outs for adding a subwoofer or amping the Celestion SL6si classics I own. I have been using the Kenwood not knowing that I could improve my sound quality by switching brands. I have since learned that watts do not mean quality. So 40 watts with one unit will sound aweful and another receiver running 40 watts could sound beautiful. I have had the NAD here for about a month and have not hooked her up yet and will do that tonight for a listen. I wounder if my vintage Pioneer HPM60's willsound better using the NAD. This should be an intersting listen for sure.
Later and Thanks
Doug