If you have an Android device there's an app called USB Audio Player Pro - turns your USB port into what is called OTG; you can add a DAC to it via USB and playback on your phone. Quite the mobile hifi solution. I use it when traveling.
Not sure if there is an iOS version of it.
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Main: McIntosh XRT1K MDA1000 MC402 | JL F113 | Bryston BUC-1 | WireWorld Cabling | RGPC1200C | PPP
Office: Bel Canto S300iu 24/96 | KEF LS50 | REL R218 | WW Mini Eclipse | 18 TB Media Server
Mobile: McIntosh MX406 MDA5000 MCD4000 MCC420M | JM Lab/Focal Utopia
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