Mastering engineer who started at Recorder Center in Dallas from 1973 to 1983 selling and installing pro audio gear and doing remote recordings. In 1983 Geurin formed a partnership and opened Diamond Night Recording Studios in Dallas. From 1985 through 1990 he worked as a freelance engineer. Geurin started Digital Editing Services, now DES Mastering, in December of 1990. In the ensuing years, Geurin has mastered over 4500 albums ranging from local and regional artists to label acts.