I'm heading to bed, and haven't had much chance to listen yet, but so far I'm extremely pleased. Very clean, absolutely quiet when appropriate, and upsampling the digital input looks like it may be my new default method of listening to CD's.

From back face to front face is 17.75". Add 0.5" for the volume control knob, so 18.25". The rear jacks would add about 1/8", but if you plug anything into them (which I assume you will for at least some of them), the real determining factor is how much room the plugs need. For me, I cut the whole back of the cabinet away, so the rear of the 990 can actually poke through until the rear feet catch on a thin strip of cabinet still remaining above the shelf. The door closes fine this way and it's easy (comparatively speaking) to get to the rear panel of the 990 for wiring.