been using clarion pro audio for a while, purchased a few decks and have had friends who use them. i am a happy customer. rumors have heard say eclipse quality went down hill? some more specific units i might mention of good quality is the Alpine 7909, Clarion Pro Audio HX-D10(i currently use)has preamp only 3 sets of 4v outs, dual 24-bit Burr-Brown dac's. others worth mention are Denon, Mcintosh, or Nakamichi.