Coast Mastering is the premier audio mastering facility in Northern California. 

We have great news: Michael Romanowski Mastering has grown! Last fall, we expanded our services, moved into two newly constructed mastering rooms in the historic Fantasy Studios complex in Berkeley, California, and changed our name to Coast Mastering.


We work out of the historic Fantasy Studios complex in Berkeley, California. Formerly known as Studio C, our two newly-built mastering rooms were designed and tuned by acoustician Bob Hodas and feature speakers by Focal, VTL monoblock tube amplifiers, A/D/A conversion by Bricasti and Metric Halo, ATR tape machines, and all-analog mastering chains with gear by Masalec, Manley, Rupert Neve, Knif, Esoteric Audio Research, GML and more.

We pride ourselves on the integrity of our listening environments and our meticulous attention to quality and detail.