gchuva,
We have a Denon 4308ci that we've have been using for HT and music with Rocket 750's and the Rocket "Bigfoot" center. I was thrilled with the HT2 TL's and HT2 sealed center channel when they replaced the Rockets. Simply a huge improvement for both HT and 2 channel music - even using a receiver for both.
Since we received the Salks I have upgraded the 2 channel setup with a separate amp (Parasound A-21), DAC (AVA Transcendence Eight Tube DAC), and a preamp (Conrad-Johnson Premier 18LS) that has a HT bypass. I also added room treatments from GIK. Each upgrade was done separately and Jim's speakers have been more amazing with each and every upgrade that I have made to our setup. We still use the Denon receiver for HT and are happy with it.
Assuming your are using the Denon AVP-A1 Preamplifier (which shouldn't be compared to one of the Denon receivers) with the W4S 550 monoblocks, I'm sure you would be very happy with either the HT3 or HT2-TLs for both HT and 2 channel music.