I just remembered; Eversolo now has a DAC - no streamer, the Eversolo DAC-Z10.
This has a better chipset than the A8 and a better clock. The Z10 is about the same price as the A8.
Connect the A6 to the Z10 via USB to get all the advantages of the Z10's components including its OCXO clock. IIS would still use the A6's (inferior) clock.
You could even eventually add an external clock such as the Stanford Research FS725 (which I use) or the NR2110-RO from Novus.

