Mercury Recording Equipment is a boutique pro audio manufacturer based in Hayward, California, founded in 1999 by David Marquette and built and distributed through Marquette Audio Labs. The company designs and hand-builds outboard studio gear inspired by classic vintage tube and discrete circuits, focusing on musicality and craftsmanship rather than clone-style reissues.

The lineup centers on tube microphone preamps, equalizers, compressors, and limiters aimed at recording studios and professional engineers. Notable products include the Studio Soul 242 and 242 PRO Class A discrete 24:2 mixing systems, the Mercury 666 limiter, the EQ-P1 and EQH1 program equalizers, and the M72 compressor, alongside custom racking solutions offered through Marquette Audio Labs.

Mercury has built a reputation in the high-end recording community for gear used by engineers such as Joe Chiccarelli, Michael Wagener, and Fabrice Dupont, and has a small but devoted following among studio owners who favor handmade, point-to-point analog equipment.

Mercury Recording Equipment has 6 products cataloged on Equipboard, including Effects Processors and Preamps. Their gear is featured by 5 artists, with the strongest followings in Rock and Metal. Notable users include Clay Parton, Tommy Lee, and Dave Grohl.