Currently, the only devices that will support this are:
1) Fireface400 - firewire - I recommend using Pace-Car with it and drive I2S to the Overdrive
2) Lynx AES16, Lynx22 - again, I recommend using the Pace-Car with these.
I have in my plans a USB interface that will support 24/192. It requires 2 clocks, so it may not fit in the Overdrive. The USB module and the clock module would have to be replaced. I am evaluating new interfaces now, to determine the best S/W USB solution. So far, I'm having trouble with even 24/96 and Mac. The latencies are too high. It may be that USB will work for 192, but it may require fast-access disk - SATA and SS memory for the OS.
First, I have to outsource board assembly of the Overdrive and get the less expensive version going, as well as outsourcing the assembly of the Pace-Car. Then I must develop battery supplies for the Overdrive, Pace-Car and Off-Ramp.
After all of this, I will have time to do the 192 USB interface work.
Steve N.