Check out a previously owned Esoteric DV-50. It is within your price range. It has what Esoteric calls "Digital Filters". It has three settings. Using it has always reminded me of tube rolling. I seem to change settings more when I playing CD's from the 80's and early 90's. Another plus is having the ability to play SACD and DVD-A. I use mine in a music only system but I can listen to DVD-V concerts. It is a very versatile machine.
Good Luck
Good Luck