Source: International Business Times
The iFi iDSD GR 2 combines a compact metal build with a clear display and hands-on controls for portable hi-fi listening. Jeff Li Portable DAC/amps occupy an interesting place in personal audio. They are considerably larger than the tiny USB dongles that can already make a good pair of IEMs sound excellent, yet they are still supposed to offer enough convenience that you would choose one over a full desktop headphone system.
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