Yeah, I don't let the dealer dictate what kind of music I should listen to; I bring my own tunes, some of them crap recordings, some of them very well recorded. I base my choice of demo music off of certain sections or cues within the song that are often difficult for DACs to reproduce regardless of recording quality. For instance, I listened to Jeff Buckley's song "Grace" in redbook, because there is quite a lot of siblilance in his voice and I want to see how a DAC handles that. Or the very beginning of Hendrix's "All Along the Watchtower," because the opening instruments are very congested and it's difficult to untangle that mess. Also I think the tape got a little chewed either on the multitrack or the master. Tracks like Patricia Barber's "Use Me" and Elvis Presley's "Fever" because I want to hear the close mic'ed upright bass, because like piano, you can tell a lot about a DAC with how it reproduces that instrument. And on and on...
Anyway, I listened to both the Berekely, the DAVE and the iDSD all through the same headphone amp, my SPL Auditor, with my same custom Mogami XLR cables. Well, not the micro, because it only has RCA outputs. All of the power was first fed through my PS Audio P300. I also used the iUSB 3.0 in and out of each rig. I could not tell the difference with the iUSB 3.0 with both the Berkeley and the DAVE, but the iDSD micro needed it, along with the Gemini cable.
As for my music software, well, I can't bring my home computer, which is an all SSD drive, 128gb ram, 6 core intel, water-cooled machine running Windows Server 2012R2. Instead, I had to use my son's little audiophile laptop I made for him (he's 13), which only has 16gb of ram. The reason I mention this with my playback software is because I use JRiver18, which still had the option to play from memory back then. I also use Jplay, along with Jplay mini, having the option to play from ram, as well. I've tried most of the other players, and yes, I've tried upsampling within my software, but I don't like, especially for an audition, because I only want the straight juice. Always kernel streaming.
That's it in a nutshell. I ain't using no speakers. Haha!