Thread about this on asr. Search "Audio stutters with USB Dacs on Macbook M1 Pro".

It does have a nice amp.  I was just suggesting that, if you decide to upgrade at some point in the future, try another amp and just use the shift as a DAC (line out mode).  The aluminum around the sides is a band covering the sides of a plastic box; I took mine off to tweak the mini-USB port...

Awesome!  Waiting for your impression.  Best thing you could try next would be an amp; the DAC in the shift seems to be exemplary (IMHO).  BTW, the case itself is plastic with a metal band surround (at least mine is that way).

Great!  Will be waiting for your impressions.

A new review:  http://www.wifihifi.ca/LatestNewsHeadlines/Hands-onReview:PeachtreeShiftPortableDAC/HeadphoneAmplifier.html   I hate short links...

I've played with the line-out option, and ran the shift into a few of the amps I have - a Firestone Fireye HD, Schiit Vali and Magni Uber, and an iFi iCan Nano. Line-out mode worked really well!    Could I tell a difference between the shift and my other dacs?  Not really, but my ears are shot...

I'm amazed how sparse the reviews are for this.    Seems like you an I are the only owners.  I'm warming-up to mine now that my ears have adjusted, seems to be a nice match for my ATH-M50x, as well as my iPuro IEM's.   Cheers!

Got my shift about a week and half ago, still comparing between the shift and my nano iDSD/nano iCan and Schiit stack - Magni 2/Modi 2 (both uber).  My old ears says it sounds good, but then the ifi duo, to my ears, still sounds best. Better impact, etc. More time will tell.  I do hate the...

Back in the day we called LISSTs "tubesters" or "fetrons"...  really!  I'm old.

Subwoofer?  HiRez music?  What are you using for playback software on your PC?  And headphones, if you like to listen that way...!

Long time reader, first post!  Tremendous wealth of info here, made me move from NO music for the last couple of decades to full-on "ear-fi" listener.  Based on the recommendations here, now have:   1) portable rig for work: an ifi iDSD nano connected to a Firestone Fireye HD amp with an...