I was surprised to discover that connecting guitar through this one gives a very special character, kind of like a bit less lows and more mids. Gives similar taste as EMG over passive pickups.
I tried to find the same sound character in other audiointerfaces and even preamps, but I couldn't. I tried Arturia audiofuse, motu m4, rme babyface fs, apogee desktop, uad volt 476, motu m4, ha i73pro, clarett +2pre, as well as preamps: wa tb12, ha312L, ha73, neve1073lb, ISA one. They just sounded less focused, more rounded - not optimal for what I play. I have no idea how good are mic preamps, but I'm sure with the published specs it is a good pro level.
Note that there's no cable by default and it will not work on Windows - for that find USB version.
digital light for volume is always on, so you always know what the volume is.
VST shop is where they earn money, I think. like cinemas and selling pop-corn. Anyways, I decided to use it just as AD converter and do all processing in DAW. easier and laptops are powerfull enough to handle the load even with a vwery low buffer sizes. I feel no latency at 32 samples.