CC was not able to fix my Pioneer 507S, an old DD ready receiver, so I was able to exchange it no charge, for a new 575X. I would have had to pay the additional $200 for a 595X. While it would have been nice to have DPLII, this receiver(575X) is certainly much better than the Pioneer. Spending an additional $200 at CC, vs going out and buying an additional unit online, was the trade-off. i.e. spend some more beyond the 200, but have two decent units. Only hooked up the CD and stereo speakers, and read most of the manual last night. I do have a couple of questions that I didn't find in the manual, and on operation. I think they have been in the forum before, but didn't find it in a quick search/sweep. - What is the internal crossover point to sub when speakers are set to small? I think it is 80Hz, but would like to know for sure. - Can the sub crossover be used for 2 channel analog sources? How to set-up, if it can. - Volume adjustment. This has one of those infinite turning knobs, with a digital scale from zero to 80. I don't get a decent volume to around 40. I think this is because it is a linear taper vs audio taper, but would like to get confirmation. Small changes above 40, make significant perceived volume changes. Just trying to make sure it is not a set-up or defective unit. From the little 2 channel listening I did last night, it does seem to give the sound a little more "umpf" in the low end, and slightly cleaner sound, overall. How is that for real meaningful discription But, to be fair my Pioneer has been away for awhile and not an A B comparison. I am sure as I start hooking-up the rest of the system, I will have additional questions. Time to clean-up that rats nest of wires.