It’s around £200 if one shops around so I decided to risk it. I also purchased a cheap PC Express to IE1394 card to fit my HP2133 netbook. Lots of fiddling around and finally all the drivers matched up and were running. My best DAC, or at least the best that will do anything above 48kHz, at the moment is the Cambridge DacMagic so I tried it it with the output from the TC.
Very interesting, the combination delivers the best computer audio sound quality I’ve achieved so far. It has a rightness and a feeling of grip that is so much better then the shiny chromium plated sound that it’s so easy to get.