If I understand your question correctly, you would like to use the DVD player to decode 5.1 and then have it amplified through the amp. Personally, I myself would consider a good receiver or preamp. This way you could have more control over the system. Some of the DVD players on the market have very little bass management and decoding capabilities as well as a volume control.

This is just my $.02.



M80's VP150 QS8's Earthquake SuperNova MKV-15
Integra DTR-7.4 Outlaw 755 Outlaw M200's Outlaw ICBM