Mastering engineer at Optimal Media GmbH, formerly known as Optimal Media Production. Note: The company does not disclose the full names of their engineers. Other mastering engineers employed are BK, HL (Heino Leja), KL, KR and TW. When submitting credits & companies to a release that shows MK in the vinyl runouts, please: Add a credit: Lacquer Cut By - MK Add a company: Lacquer Cut At - Optimal Media Production (only valid for releases until October 1, 2011) Add a company: Pressed By - Optimal Media Production (only valid for releases until October 1, 2011) Add a company: Lacquer Cut At - Optimal Media GmbH (only valid for releases after October 1, 2011) Add a company: Pressed By - Optimal Media GmbH (only valid for releases after October 1, 2011)