Thanks for the info. Couple of questions if you don't mind ;-)
1) does the MRX 510 have the 7.1 or 5.1 pre-outs
2) have they changed the DAC/DSP chips from the initial MRX line --- if so, did they do it in house or are they using an off-the-shelf chip?
3) will the ARC software be able to be run on Apple devices?
Any info greatly appreciated.