Recommendations for digital music servers?

Hello everyone, I just purchased a Hegel H390, pick it up tomorrow. I'm looking for the best way to listen to my digital library. I currently use a Mac Mini with an external SSD. The Mac has USB and Toslink outs. I've read that USB isn't the best connector to use with the 390. The H390 streams so I don't think I need a streamer, probably just a music server. If possible, I'd like to keep it under $2,000. Any recommendations?


My System
Hegel H390 integrated amp
Sutherland Little Loco phono amp
VPI Prime turntable
Transfiguration Axia cartridge
Revel F208 speakers
Sumiko S-10 subs