two versions do exist of SPDIF.

It is controlled by a bit in the SPDIF code.

see here.

http://en.wikipedia.org/wiki/SPDIF

I had the same issue with some other kit about 3 years ago one system would only accept consumer format SPDIF.

also here is an quote

"What are different types of IEC 958-interface

There are 2 implementations of IEC 958: consumer and professional. Those are referred in standard as IEC958 Types I and II. IEC958 professional format is same as AES/EBU but is carried over same type of coaxial or optical interface as consumer SPDIF. "

At his url: http://www.epanorama.net/documents/audio/spdif.html

Consumer allows subcode (Q Data) information (track information)....which can effect sound quality.

professional does not allow this.


hope the artcles helps fix the issue.

May be this is what was ment.


Michael