I own 3 of these little gems. Pretty much happy with them as USB DAC for my Imac and my HP PC. I recently try the optical in from my CD player to my Adam F7s power speakers. It works fine the first time I set it up but after I turn the CD player off for a while then I try to play some CDs again, it does not work. I have to unplug the optical from the AE D1 and plug the optical back in, then it works again. I am tired of the plug in-plug out the optical from the AE D1.
I' ve read somewhere, the AE D1 works with certain device and not with certain device.
Any suggestion is fully appreciated.