I used it in the studio for a while now. For the price you can't beat it.
The built quality is really nice, feels solid an sturdy. I've been using this midas designed preamps for a long time and I can't say anything bad about them, they do the job.
I use it as a preamp bank with my Audient id22 via optical cable. The only concern is, that sometimes when I turn on the unit, it fails to connect to Audient interface. But if you flick the Sync switch, it connects without any issues. Not sure, where the problem is, but it's not a big deal. Still pleased with purchase.