Hi,
Been using my MIYO since it arrived nicely packaged after my Kickstarter bid.
Sound quality:
Clean, crisp and powerful, normally use Mac's and the difference between the standard Mac output and via the MIYO is enormous, the extra drive, headroom, and dynamics is amazing.
Would not now be without my MIYO, I use it to drive a Crimson power amp and a pair of Tannoy Little Reds, my favourite thing is to play Royal Blood at trouser flapping volume, the brilliant drive and dynamics as I mentioned above make this a silly smile moment, it sounds fantastic!!!!
Also use it to drive Focal Studio's and again the punch and range is brilliant, clean and powerful.
The MIKO also acts as a high quality 2 channel input device, I have not used it for this purpose so far, but I would have no hesitation in doing this should I need to as I'm very sure it will work as well as an input as it does as an output.
Build quality:
Beautiful, simply and obvious. Clever use of solid anodised aircraft quality aluminium body precision machined to act as a heat sink for internal devices without need for conductive paste, this means it feels pretty warm to the touch which comes as a surprise to start with bit once you know this is the designs intention it stops being a concern. Good quality connections well supported by case.
Operation:
In case of a mac, just plug it in, use preferences to select as output device, choose track, play and relax.. Smile as you here what your MIYO sounds like..
My experience has been 35 years in a recording studio that would almost certainly be listed in the world's top 5, large PA's, broadcast, etc so I have heard a lot of things over the years, given the price of the MIYO and its overall delivery of outstanding audio I can 100% recommend it. GRAB ONE!!
Rup