Best Digital Coax for Tube System under $300

I have been very lucky with the advice that the Audiogon folks have given me.

I am now trying to find the best digital IC that I can find for under $300 to connect a Teac VRDS Transport to a Valab non oversampling DAC. The DAC is feeding a Jadis Orchestra Reference with some great Gold Lion KT88 tubes and a pair of Mazda 12ax7s tubes. Speaker cables are SR Tesla Accelerators, Amphenol polished glass toslinks between Teac and Valab and Gabriel Gold Revelation MK2's from the dac to the Jadis. I love it so much.

Here is why I need to find a great digital IC. I just discovered that even though my Valab dac has inputs for toslink, usb and coax, I cannot run both usb and toslink at the same time.

I don't like the toslink out of the Mac Mini that I need to attach to my dac, so I am using usb to connect which is my only other choice. Since I cannot switch between toslink and usb, but I can switch between usb and coax, I need to find a great coax. Why can't life be simple?

I am going to email Steve to see if he makes a GG coax cable. I really like the Gabriel Golds.

Anyone else have a suggestion? Thanks in advance.