I purchased a MyDac for SPDIF use, fully expecting to discard it in a few weeks. To my surprise, it exceeded my expectations. I am currently trying to squeeze the most out of it with a good power cord and tweaks. I first tried it with the stock cord (NP c7). Then using a cryoed c7/c14 adapter, I tried an old Volex with hospital connectors - better. Then an older Shunyata Diamondback - better. Finally, with a Lessloss DFPC - Better. I have a VH Audio Flavor 3 PC with Furutech connectors (c7 IEC) on order to see if bypassing the c7/c14 adapter improves things.
Tried 4 Herbie's Audio Lab baby booties (move toward neutrality; maybe too neutral for me). Tried 1 Myrtle block on top - Good.
I know there are better and I am looking at EE Minimax (Rolled Op amps), W4S Dac 2, and the BMC Pure Dac (too new; no info). But right now, it is sounding a little too good to discard.