This is way out there, and I would understand if it doesn’t get a response.
I love the performance of Toslink on my DS DAC, and as per your advice I love it most when there are no other noise-conducting cables connected to the machine. The problem is that I have two sources and there’s only one Toslink input.
I’ve yet to find an external Toslink switch which actually functions at 192kHz sample rates. I know that I can get Toslink-to-coax converters and run one of my sources that way, but that’s adding a crappy external power supply and a potential source of electrical noise to the system.
So I’m wondering whether it’s feasible to mod the DAC, removing the XLR or coax input and adding another Toslink one. The second input is just for my TV so it never goes above 48kHz, meaning I could use a standard Toshiba TORX177 or 147 receiver component if a suitable Vcc is available and if the output from the component is compatible with the circuit to the FPGA.
Electronically, is this feasible?
Edit: perhaps I could turn the coax input into a combo like many other products do, with the new optical receiver’s output soldered directly to the coax input’s signal pin.