IMHO Opticis is well worth it simply because it provides absolute isolation between computer and DAC - otherwise you have a metal cable connecting the two.
As for the Sprocket, I just leave the darn thing plugged in to the wall wart all the time - end case charging problems... or should I say, memory problems LOL
As for the Sprocket, I just leave the darn thing plugged in to the wall wart all the time - end case charging problems... or should I say, memory problems LOL