The Topping D10, a little DAC with a cool feature.
USB (data and power) in, TOSLINK / S/PDIF out. According to the Topping website, it should support up to 24/192 out for the TOSLINK. It doesn’t mention DSD (with respect to digital out), but I’d think it should handle at least DSD64.
Anyway, I’m thinking about putting one between my USB source and DSSr for galvanic isolation.