Marantz CD-17, all the older Yamaha single disk CD players and changers, a few of the Denon CD changers (DCD-460,DCD-360), the Audio Alchemy D/A converter DDE v3.0, one model of Luxman (can't remember the model #), the Rotel RCD-990/991 (but the steps are like 5db apart), just to name a few. I've heard good things about the Metronome, a friend has the Theta and loves it, and since Wadia is out of business you might watch for prices to start dropping on the 830.
