The ODAC is soldered to the O2. The O2 is in pristine condition (and I did splurge for an OP2227 in the voltage gain stage and WIMA caps). The analog in works

The ODAC is soldered to the O2. The O2 is in pristine condition (and I did splurge for an OP2227 in the voltage gain stage and WIMA caps). The analog in works on the O2 so I may abandon the ODAC in place. The Fiio options do look good. My current desktop application has me switching headphone and mic between a work laptop and personal desktop and headphone and speakers often. I use analog switches, but I'm leaning towards a one box solution in the future rather than adding more hardware. So something like a mayflower ARC mk2 perfectly covers all of my demands (including a bass boost option for my open-back headphones). I already use a USB switch with a powered USB hub, so really it would be swapping out 3 boxes and many cables for one box. The schiit hel 2 looks really great but I've read reports of 200 ms latency.