I run my iDSD micro into my SPL Auditor Headphone amp, which is a pro audio design for mastering.
In fact, I just recently was asked to bring my SPL Auditor out to a recording session, where we listened, first, to some mixes with HD800s just coming out of a Berringer mixing board. It sounded good! When we then hooked up the SPL Auditor out of the board, listening through the same cans, you could now here how narrow the stereo mix was, when they had spent a lot of time with stereo placement. We took it a step further and hooked up the iDSD micro to the whole rig, with the Auditor, and now you could hear every little digital glitch, or imperfect edit done in the digital domain. The tracks were really put under a microscope to where quite a few thing needed to be cleaned up, including regaining some dynamic range, which was lost only by mixing with through monitors.
In short, my home rig told the truth...and by referencing some choice tracks, they were able to get what they had wanted...and more!