Any opinions on the AMR Digital Processor 777 Dac?

Loftarasa; I totally understand that all things don't work in all systems and you are correct, the iTube Mini is on the way and as I understand it, that you unit will sport S.E. and TRUE Balanced inputs and outputs along with multiple inputs. The Mini will also sport a better analog volume control and a better power supply, although the P.S. included with the current iTube is already quieter than a battery supply.

I have always contended that the iTube used with its own volume control and/or in +6dB gain is absolutely NOT transparent :)

Question for you... If you went to "fixed" S.E. were you using the iTube as a preamplifier? If you were (using the iTube as a volume control) then I TOTALLY understand your comments/findings and agree with them. That is a great feature to have in a lower end system (not being a snob) or as a backup in the case that your preamp is in the shop for repairs or the such.

Back to the music., listening to Reference Recordings Rachmaninoff on 200gram vinyl as I type this :)

Hi Audiofun, I played around it with again last night. I agree with you; in Preamp mode (both 0 or 6db gain), it's deleterious. The loss is much less detectable when in buffer mode, but here I preferred 0db to 6db. I also agree the Digital Antidote feature is not really my cup of tea and that the 3D feature is pretty neat. So I think we're on the same page, except for me, going from balanced to single-ended is too much of a net loss. I may wait for the iTube mini.

I'm no E.E. but I still don't quite get why switching the orientation of the wallwart will make any difference -- I mean, it's converting AC so electrically, how can it matter?

The polarity issue would take way more time to get into and explain than I have :) Let your ears be the judge, try it oriented in both positions and ponder what you hear :)

Just so you know I am not one of those people as it relates to high end who believes everything can be explained. FYI, I have no idea why some power cords sound better into my SP10MK3's power supply than others ??? well, ok.., I have some ideas ...

@Audiofun: by magnetic cables I mean those that I have in my main system: High Fidelity Cables.

@Loftarasa: it makes a difference if you swap the hot and the neutral when you turn the walwart. Even fuses have a direction! Read about the after market fuses on this and other forums. As I mentioned many times, upgrading stock fuses yield, after dedicated lines and audiophile wall sockets, the highest return.

Back to the topic: anyone have the SE upgrade installed?

Loftarasa: I agree with everything you've stated :)