Is the mcintosh mx5000, still the gold standard out of all the sound quality head units. I am looking for the very best sounding head unit that was ever made. I notice though that it can be linked up with a McIntosh mda 5000 da converter, Can it not sound its very best without the converter, or after peoples experience with this head unit, that the converter is not needed for the very best sound quality out of this unit,and even detrimental to getting the very best sound quality out of the McIntosh mx5000 head unit. I,m looking to replace my alpine 7909 anniversary edition for sound quality. I have tried the sony cdx c90, and clarion drx9255. Both were great sounding units but was missing the full sound of the anniversary deck.