I read a review in the December Sound and Vision that says the DV-45A is supposed to offer bass management for DVD-Audio and SACD. I have calibrated my system using Avia and ensured that the subs are working at the correct level. I've got two HSU TN1220HO subs being driven by a 1000 watt pro audio amp. All speakers are set to small, subwoofer on. When playing DVD-Audio multi channel disks with no .1 channel, the subwoofers are absolutely silent. To test, I shut off the mains and just listened to the sub...no sound whatsoever. What I have been unable to determine is if this is the way this player is supposed to perform or if I have a defective unit. Thanks in advance for any insight.