Any opinions on the AMR Digital Processor 777 Dac?

I solved the problem by going to QuickTime player, and change the output to 16/44.1. Under Windows OS, iTunes is just a file manager for QuickTime, which actually plays the music. Now my DP-777 (USB) now recognizes 16/44.1 and decodes accordingly using its classic DAC; the sound is... better, but still not there. I was told iTunes convert 16 bit to 24 and back down to 16... don't really know where the myth is.

Other than the USB quibbles I also have problem with DP-777's bass, compared to my previous Dodson 218 DAC the DP-777's bass is both weak and veiled. I hope a full burn-in solves the problem (now 100+ hours) but from the reviews I read even after 500+ hours the bass is still not a strength of the DP-777.

I can honestly say that it is not really worth judging it before 500 hours, it changes that much. The bass is flabby and soft when new. I have broken 2 of them in and the units broke in identically. I have found the bass to be as good or better than any dac I have owned, it just sounds real. Some dacs do have a pistonic (artificial electronic sounding bass) but even when
I listen to Hardcastle Jazz series music the bass is represented perfectly. At less than 200 hours you have a good ways to go before you know what it can do. I remember my Metrum Octave with the Diverter HR was quite a bit better than the AMR until I go t about 300 to 350 hours on it.., then it was bye bye Metrum. Have fun.

Audiofun: thank you for your encouragement!

Other than burn-in, I notice the USB input sounds much worse than SPDIF. Before I bought the AMR, I was using Off-ramp 4 + Dodson 218, the PC/USB sounded extremely close to CD transport/SPDIF. But then the AMR arrived, transport/SPDIF sounds better now, CAS/USB sounds TERRIBLE! I break-in the USB input for a while already, and even tried the PC >> USB >> Off-ramp 4 >> SPDIF >> AMR, no matter what I do, if a PC is involved, the sound deteriorate significantly. AMR seems to hate my PC while my previous Dodson loved it, even a Benchmark DAC-1 USB sounds better directly from my PC.

Yeah, I am gonna buy a Mac mini sooner or later, but why is there such a big discrepancy between a PC and a transport? Does anybody experience this? Does USB input takes longer to burn-in? Can you eventually get USB to sound as good as SPDIF inputs?

Yingtonggao, try J River Media Center. It costs $50 but is well worth it. The other thing you want to do is disable kmixer in XP or upgrade to Windows 7 if possible.

Running JRMC on Win 7 here, optimized, into the DP-777, with superb results.

Essentialaudio: Good to know "JRMC + Win 7" sounds good. I am not sure if I want to go with "JRMC + Win 7" or "Amarra + Mac mini". I am a PC person and not a Mac fan, but I like the convenience of iTunes too, does JRMC piggy back onto iTunes' interface? Does it support apple lossless format? My problem is I've copied all my CD into apple lossless.