801evan
Headphoneus Supremus
Oh to add about that coupler chain, the USPCB has VBUS off. You can mod the couplers too this way but I'm too clumsy to pull it off properly. So it's setup where it won't even light the LED on the 2nd idefender on the DAC side. Which is fine coz I'm powering it externally but it doesn't explain why it can still send electrical signal on the data lines from the Corning cable through 6 couplers to the idefender with minimal power. By comparison, it could barely light the led on the idefender if the idefender is directly connected to the rear end of the Corning. Next experiment is to cut off the grnd line which I'm expecting it to totally not work but if it does, it'll add further isolation.
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