I posted about this unit on another forum I frequent, here is the text from there:
I had been asking for advice and got frustrated with the lack of a review of the Music Hall unit, so I did one myself...
"A month or so ago I asked for DAC recommendations, got some good feedback and decided to order these from Music Direct and do an extended audition. Budget was ~$1000.
-Benchmark DAC-1 USB ($1300)
-PS Audio Digital Link III ($700)
-Music Hall DAC25.2 ($600)
-Channel Islands Audio VDA-2 ($600)
I had my wife hook them up in random order so I didn't know what was what (I was afraid I'd be biased toward the Benchmark, more $$=better, right?). And left them on and playing music via my Apple TV or an Airport Express continuously, although I only listened at night after work and on weekends. Every week or so we'd swap in another one.
My Marantz CD5001 was used as the CD transport and I a/b'd it's internal DAC against the one in the rack at the time. Here are my opinions:
All music sounded better thru an outboard DAC vs the built in one in the AE, hands down...they are in a different league, anything would be an improvement.
Of course there were differences among them;
The one I was going to buy before I decided to do an audition, the Benchmark, was probably my least favorite. It was very detailed, which was nice at first, but after awhile I found myself wanting to go do something else or fiddle with the tone controls, very bright and fatiguing, something I had not previously experienced with this system. And on a subjective note, it was the least attractive of the bunch, It was also the most expensive, 2x as much as the others, definitely not twice as good. Back in the box it went, excluded from further consideration.
The VDA-2 was next and may have benefited from following the DAC-1, I liked it enough to not box it up right away and consider it as the one I would keep. Aside from lack of harshness I would say the next thing I noticed was the sound stage opened up a lot. Night and day difference between this and the CD5001.
The Music Hall was next, and at first I thought I was listening to the Benchmark again, very bright the first couple days, but this quickly went away once it warmed up (tubed output) and it took the VDA-2's ability to make digital music sound analog even further, Detail and musicality were amazing but not too high resolution. I think this is the Benchmark's main problem, unless a recording is mastered perfect it will magnify problems or poor practices. I had a feeling I knew which one this was before I saw it, because I thought I heard some tube "warmness". Again, much improved over the CD5001. This one was also kept for consideration.
The PS Audio was kind of disappointing, it started off well, warm out of the box and it sounded great with the compressed streamed content, but when I compared it to the DAC in my CD player I really could not hear a difference, if anything it was a little muddier...back in the box it went.
I listened to both the CI and Music Hall all week, and last Wed. I decided on the Music Hall, mainly because it just sounded less digital than the CI. And I think the Music Hall demonstrated a bigger improvement over the CI when compared to the CD5001's DAC. Plus the CI does not have a USB input or a built in headphone amp which may never be an issue, but who knows?? Either one would have made me happy."
Just my opinions...this was posted a couple of weeks ago and it continues to improve, I'm very happy with it. I find it curious I liked the 2 least expensive units the most...
This was done as a stop gap until I could budget the DAC i really want, but that is years away. This will do nicely until then.
the relevant parts of my system are a MC252, C220 and Monitor Audio RS8's