Optical ST output

Hi. Does anyone know of modern digital sources (or separate modules / converters) with optical ST output (AT&T)?
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AT&T ST Optical at each end was the best way as Wadia/Teac/ML used to do as a very expensive option, especially when used with a dab of crystal clear optical "Indexing Matching Fluid" on each end to take up any minute air gaps. way out in front of any other digital hook up.



Cheers George