The name of the company behind the labels S Press, S Press Tapes, S Press Tonband etc. Also listed as S-Press Tonbandverlag or S Press Tonband Verlag.
Credited in the early years ca. 1971 to 1975 as Edition S Press (a name that was used again in the later 1990s).
The program was edited by Nicolas Eichhorn and Michael Köhler in the early years, expanded to Wolfgang Mohrhenn in the early 1980s.