I would suggest an extensive audition of the Simaudio streamer. It’s very possible their outboard unit is quite good, but the Mind2 built into their DACs (including the 680 and up) just wasn’t competitive with other units I’ve auditioned and particularly against what i own. Importantly, I wanted it to be because I like their DACs quite a bit and was hoping to consolidate boxes into one higher end unit. Was not to be. Hopefully the stand alone streamers are better.
Best,