DIGITAL OUT: Optical Cable vs. Coaxial Cable

A well made coaxial cable is more durable than a glass cable so if you change or move your equipment rather than place and forget, coaxial is better. A true 75 Ohm quality cable is held to a reference whereas Toslink can be variable in quality from cheap plastic to expensive glass. If you believe that "bits is bits" then it doesn't matter. I prefer coaxial. Also, the connectors are important, so look at the way the cable is fixed to the connector. A solid cold pressure weld is more secure.

there are many factors to both including length, materials, design quality, associated equipment etc. as with most choices it will take experimentaion to know for sure. i just switched toslink cables on my dtv dvr to theta casanova and there was a marked difference. i would not have guessed this before. the new cable is an mit avt1 and is available through their discount site for around $50 if you chose to go that route. best money i have spent for a long while. i use a mit reference coax digital cable from my dvd to pre/pro. there is allot of good info on this issue on wikepedia.

The main reason Toslink is crap has nothing (or VERY LITTLE) to do with the cable quality. It has to do with the cheap transceivers (the device you plug the cable into at each end) used in Toslink systems. It's convenient and sometimes necessary when it's important to electrically isolate equipment from each other, but I agree with rcrerar that a good 75ohm will outperform any Toslink, no matter what it's made of.

Glass fiberoptic cable (AT&T - ST) is another story altogether, but it's found only on the most expensive consumer digital equipment (like Wadia, for instance.)

i would have agreed with nsgarch two weeks ago but when i changed optical cables it was night and day. the only explanation could be the cable itself. there are allot of discussions on this forum and others about whether quality of either digital cables matters and i never knew what to believe. now i have proof and am quite frankly surprised at the outcome.

Richard, I agree there are differences in Toslink cable construction; but I wonder if you compared the MIT Toslink cable with an equally "better" metal one?

My earlier point was that Toslink performance can be pushed only so far until it runs into the limiting factor of the transceiver units. A friend of mine who used to be with Wadia explained that the most expensive Toslink transceivers cost the manufacturers maybe $5 - $15 while the cheapest AT&T transceivers start around $100!

Of course I suppose there can be variations in 75ohm interface quality too. For instance, my friend Larry thinks coax is best, but ONLY if it employs BNC (bayonet) connectors (as opposed to RCA connectors.)