I am currently running a Marantz 7400 receiver with a Panasonic DVD-S97. Do to equipment access issues, I have not tried experimenting with the DVD DACs vs. the Marantz DACs. Any reason to think there would be an improvement by utilizing the Pani DAC's? Also, if I have calibrated by speakers based on the Marantz Receiver, would I use those same settings (+/- db's)when going thru the setup with the DVD player or do I need to get the sound meter out again to re-calibrate? In general, is anyone using their DVD DACs over the reciever? if so, what equipment are you using? Thanks.