IEC 60958-4:2003+A1:2008 specifies the professional application of the interface for the interconnection of digital audio equipment defined in IEC 60958-1. This bilingual version (2013-05) corresponds to the monolingual English version, published in 2003-05. This consolidated version consists of the second edition (2003) and its amendment 1 (2008). Therefore, no need to order amendment in addition to this publication.