Re: [SlimDevices: Audiophiles] Re: optical out ?

[Hiroyuki Hamada]

The following is a quote from RME (digital audio company), www.rme-audio.com: We also recommend the use of optical cables. Thus the ADI-1 is the perfect, complete ground isolated front end for RME's digital in/out cards. At no time recordings and playbacks using the PC sounded better! And if anyone tells you that optical cable introduce jitter and are very delicate to handle, and it's better to use wired connections: forget it! This fairytale from the early days of digital audio is proven to be simply a fairytale, nothing else. Also, following is a quote from sixmoons.com (review of DAP-777, http://www.sixmoons.com/audioreviews/reimyo/dap777_3.html): One feature's significance on the DAC has gone unmentioned thus far: The optical input. While usually considered the ugly duckling of digital connectivity, its implied inferiority vis-à-vis RCA-carried S/PDIF is a myth in dire need of correction. Depending on the system, a truly superior glass-fiber Toslink like Wireworld's green Super Nova 5 might actually give superior results over standard RCA cables, for pennies on the dollar. This is also an interesting quote from one of the manufactures of toslink on plastic toslink (http://www.lifatec.com/toslink4.html): GLASS vs. PLASTIC fiber optic cables: We have been manufacturing fiber optical cables for 35 years and 95% of these cables have been glass. So why are we now manufacturing our Audio Digital Optical Cables using plastic? TECHNOLOGY!!!!!!! The improvements in the optical purity of POF (plastic optical fibers) and the increased performance of the Opto-electrical Components has allowed us to use POF in our cables. Do we give up any performance? NO! In fact, the performance has improved, because the Opto-electrical Components (used in Audio Equipment) are designed to interface with POF fibers. This Technology improvement has allowed us to manufacture cables for our customers at much lower cost than ever before. I myself use Toslinks in my system and I am very happy with the results. Hiroyuki On Dec 5, 2005, at 9:00 PM, PhilNYC wrote: LavaJoe Wrote:  The sales guy was very convinced that coax was far superior to toslink.  If there was any truth in this, it must have been jitter (what else could it be?), but I never found out what the basis for this opinion was (of course, high-end stereo sales people tend not to use concrete reasons for good and bad). The reason I've heard from some engineers is that the conversion process from one medium to another (eg. optical to electrical) is where there is the greatest probability of adding jitter.  With coax, everything stays electrical, but with toslink, the signal must be converted from electrical to optical and back. Coincidentially, one of the arguments that says a hard drive is better than a CD is that the conversion from magnetic to electrical is far simpler than optical to electrical... --  PhilNYC Sonic Spirits Inc. http://www.sonicspirits.com ------------------------------------------------------------------------ PhilNYC's Profile: http://forums.slimdevices.com/member.php?userid=837 View this thread: http://forums.slimdevices.com/showthread.php?t=18772 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles

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