SPDIF to USB converter???


Does anyone know of the existence of a digital signal adapter/converter from SPDIF (IN), preferably coax, toslink if need be, to USB (OUT)? Since I haven't found anything, I wonder if that is at all possible or would the signal have to go through multiple conversions to achieve this?

Thanks in advance and sorry if the question has been discussed before, I couldn't find it in the archives
karelfd
Hi Karel,

Unfortunately, the short answer appears to be "no." You'll find a couple of good explanations in this thread:

http://www.head-fi.org/forums/f46/spdif-usb-381903/

Regards,
-- Al
My most profound apologies. I managed to get that the other way round.

They exist in the pro audio world, but they are not necessarily audiophile quality. Try the Edirol brand (made by Roland). They used to have a really cheap cable product called the Edirol UA1D, with a little D/D converter which did SPDIF I/O for both Toslink and coax, and plugged into your USB port at the other end (I think it was OK in all directions - like a universal digital adapter of sorts but it was meant to plug SPDIF output things into your PC. They probably make a new version now but most of recent audio interface tools tend to have toslink-in, not coax. The UA1D can probably be found used. Otherwise, if you really want to have coax-in USB-out, you might try one of the $200-300 range converters (which tend to have more bells and whistles), or you could go real low-tech and do a SPDIF coax --> MIDI converter, and then add a MIDI-->USB converter cable to the back end... not pretty but...
The USB input is 16/48 only which defeats the purpose of feeding it hi-res formats.
The UA-1D appears to be discontinued, but there's a UA-1D on ebay with a Buy-It-Now at $50 and topdjgear.com appears to have them NOS for $90.
Disclosure: never tried one and I'm not the seller.
Even if the UA-1D can convert in the spdif to usb direction (which I'm not 100% certain of, after looking at its somewhat ambiguous description), I still don't think it would work for Karel's purposes.

In the computer interface application it would work by acting as a "guest" or "slave" of the computer's usb "host" controller. But the usb port of a usb-compatible dac is designed to also act as a guest (again with a computer or computer-like device providing the host controller function). So by connecting this converter to a dac via usb, no host controller would be present and the link would not work.

Regards,
-- Al