I use my Buffalo DAC with a single BNC SPDIF input, and an ethernet cable connected to the DSD output to my Phillips 963SA. When I want to listen to a different SPDIF source, I switch the cable, and when I want to listen to SACD, I switch the tiny i2s/spdif switch on the buffalo.

I would like to simplify my switching.

Without access to an i2s switch, I am thinking that I could set the Buffalo to i2s input, attach a high quality RJ45 jack to the i2s input on the Buffalo, install the MUX with i2s output and a short (inches) ethernet cable that connects to the RJ45. This way I could switch SPDIF sources with the MUX, and then switch the ethernet cable to connect DSD.

Are there any problems with this setup? If I keep the ethernet cable between the MUX and the i2s input on the Buffalo very short, will there be any detrimental effect from using the RJ45 connector instead of a direct connection?

It would be great if there was a way to externally switch the tiny i2s/spdif switch on the buffalo, but without being able to do that, and not wanting to open up the DAC every time I need to switch, is there a better solution than the one I outlined above?

Thank you for your time and suggestions.

Aaron.

That would route the s/pdif around your case a bit, but it is possible.