Montreal Mastering Studio For pricing and booking information, please email us master@greymarketmastering.com Digital and analog mastering services for all formats. For analog mixdown and tape layback services, see the FAQ. News Thanks for making 2008 our best year ever, with over 240 projects mastered. Have a look at a small selection of albums we've worked on. About Grey Market Mastering Our studio is located in central Montreal, but we serve clients all over the world (20+ countries to date.) All of our masters are created using state of the art analog processing equipment. We have been in operation since 1997, and in our current studio space since 2006.