Mastering engineer at Marcussen Mastering, Hollywood, California. Also worked for Precision Lacquer from 1979 to 1999 and at A&M Mastering Studios (1999).
Credited in vinyl runouts as:
PRECISION SM
PRECISION LACQUER SM
Alias:
Precision
Sites:
http://www.marcussenmastering.com/
https://en.wikipedia.org/wiki/Stephen_Marcussen