I have DN with a Vip 211k receiver and have not noticed much of a volume difference. Some SD channels have louder sound than some others, but only needing a small adjustment with the remote. But the only HD channels I get are OTA, run thru the 211k and the occasional free HD channel preview from DN. Still have not noticed much level difference, am surprised at the problem. Could there be a difference between the 622, 722 etc receivers and the 211 series?
Friends don't let friends use composite video.