Toslink Spdif to Coaxial converter?

[mrfluffy]

Was wondering if someone could recommend a transparent good measuring spdif to coaxial converter. I know there's like 20 on amazon but was wondering if anyone had an good experience with one. I've tried about 3 of them and they're all pretty crappy. Thanks!

 

[Jimbob54]

I use these https://www.amazon.co.uk/Tendak-Opt...9&sr=1-1-e00012f1-1c8d-4cb3-8ce3-384c62c0be4f

Issue free but of course cant tell you if it measures well.

 

[wwenze]

Example of crappy?

 

[Blumlein 88]

https://www.audiosciencereview.com/...mer-ultrahd-hdmi-3x1-switcher.1560/post-61147

This is from some measurements I did of a HDMI switcher which included the ability to strip out Toslink spdif. In the last post in that short thread I show the result feeding a competent DAC the optical from a good USB to Toslink converter and this cheap switcher. Even the digital feed is pretty compromised. Jitter levels are enough to raise the noise floor, modulate the floor with signal level and substantially compromise the signal. For casual non-critical use that may be okay.


I've not testing just the converters like in this thread, but would guess they have similar or maybe worse performance. The clocking and such of these devices at these prices likely isn't very good. Would be nice to test a few if anyone has a decent ADC and some on hand to test. Maybe there is a gem of a unit hidden amongst the poor ones.

 

[MRC01]

The big question is whether the DAC receiving this signal can reduce or eliminate that jitter. Commonly used chips like the WM8804 can de-jitter the signal, to some extent.

 

[somebodyelse]

See posts #328 to #330 for out host's comments on a cheap adapter from monoprice.

 

[MRC01]

Interesting read: https://statics.cirrus.com/pubs/whi...e_of_spdif_digital_interface_transceivers.pdf

 

[gvl]

A bit pricey, but at least there's some performance data here which looks reasonable:

https://audiosciencereview.com/foru...i-ipurifier-s-pdif-digital-audio-filter.2189/