Toslink Survey / Please Participate


Digital interconnection, IMHO, has always held many myths.

When I first began delving into outboard D/As, jitterbugs, and transport combinations, very few component manufacturers (for some stupid reason) were actually providing coax RCAs (75ohm SPDIF). Interconnection, in many cases, was acheived through the use of Toslink.

Now most of here already know that I am quite an extreme advocator of balanced interconnection including, digital signal. I personally use AES/EBU on XLRs for my 2 channel system.

Out of necessity, I have had to hook up my home theater DVD player to HT receiver using the Toslink (Denon DVD 5000/Denon 3300). And after listening for an extended period of time, I have to ask, (because I obviously must be forgetting),....... Why was Toslink so bad? Why do many people say it sounds like crap?

The system sounds fine. Very natural and "undigital". I won't mention the Toslink cable manufacturer, but it is glass, and the cable costs $39.95. No "Break-in". No "cryo" no crap, just hook it up and go.

When you think about it, many issues associated with interconnection are negated. Balanced????? No Need. RFI, EMI ????? Trivial. Impedance mismatch????? None. Adverse environmental conditions????? Irrelevant. Overall, a very easy, inexpensive, and sonically acceptable interconnection. I don't know about 2 channel usage, but if this any indication, I'm sure it would yield acceptable results?

Can anyone comment? Is anyone still using it for 2 channel? Even if just out of necessity, or otherwise. Does anyone find Toslink unacceptable?

128x128buscis2
When I had the CI Audio Dac and PSU, it allowed for both toslink and rca inputs. I played around with different cables using the glass toslink from ebay against numerous other digital and analog rcas. I found the glass toslink to be middle of the pack. My budget digital cables ranging from D60 to wutever else I had at the time were inferior to toslink. The better cables were actually regular anlog cables I had at the time I think were Harmonic Tech Silways2 and Bogdan Princess to name a few. I've been using analog cables for digital even before this experiment which only further supported that good analog cables are better than digital cables. My theory is the cable with the most uniform impedance with the lowest resistance and capacitance is the better cable for digital or analog apps. Toslink is weaker in general, I think, because it goes through extra optical conversions which its quality is dependent on the quality of these converters. It's just one more variable that allows more chance for the signal to be mucked. When properly implemented, toslink can be good and cheap, but I think it lacks character compared to using rca connections. Ultimately, while were on this topic, I would want to explore other types of digital transmissions as well such as USB... when finances permit.
I was using "glass" Toslink 1-2 years ago, but have come back to digital RCA cables currently. You can get great sounding generic glass 1.5 meter toslinks for under $30 on ebay with ever higher glass strand count. Back then they seemed to sound as good or better than any under $300 RCA digital cable I used so I gladly sold my expensive cables and just got a couple cheap glass toslinks.

The weakness of toslink for me was the loose fitting connection, if you look at toslink cable sideways you will notice it can sag slightly and not even be 90 degress CDP.
I suspect performance can be much improved if a better connector was developed.

I have since replaced glass toslinks with newer Sterovox HDXV digital RCA for under $100 and increased performance slightly for low cost. Also like Viggen I have used standard Bogdan analog silver IC with with Eichman Silver Bullet RCA as a digital cable with excellent results (Bogdan Silver Spirit IC) .
I believe two things have changed over the years , 1 being the toslink connector on most hardware has improved, and the simple invention of a glass toslink connector has provided a more efficient signal transfer. While it is still possible to find better coaxial cables {a little more full bodied IMO, if you willing to spend more money} glass optical is now at least in the same league , does not carry an electrical signal as you stated, and therefore is less prone to carrying ground loops , hum etc.
Its a good choice for great sound at a low price.
I used Toslink years ago when I had a Meitner CD3 feeding a Krell DAC (should never have sold that Meitner). The plastic Toslink cables were not nearly as good as the glass ones--don't ask me why; you could bend the plastic cable and mess up the sound badly, to the point of cutting it off. Still felt more comfortable with coax, but my recollection is that at the time it was hard to tell any difference between the glass Toslink and the coax. I've been told by a designer that a lot of it depends on the interface in your transport and DAC. A designer only has so much time and budget to fit their products to a certain price point, so they will generally optimize the interface that they believe will be the most commonly used, and that's usually the coax.