” the iDAC2 seems to be more intended for use at your desk or in your home audio system. There’s no on/off switch, and the analog RCA outputs completely bypass the volume control, which is what you want for best sound quality. The iDAC2’s feature set is more similar to the nano than the micro iDSD. While its headphone amp does not have the crazy power of the micro iDSD, it is significantly more robust than the nano iDSD and able to drive even my Sennheisers to more than satisfying levels. However, where the micro iDAC2 really shines is in my home playback system. With the Class-A output stage, it excels at micro and macro dynamics. It shares the iFi house sound with the iDSD models but is slightly more forward and alive in the mids without ever sounding harsh. Sound stage is huge, extending far outside the left and right loudspeakers. Quality is really surprising for a $349 DAC, and in my opinion, is slightly better in my home system than the more expensive and feature rich micro iDSD.”
Thanks David!
https://www.amazon.com/review/R2RAU0LH053JTP/ref=cm_cr_rdp_perm
