Emerson Custom is a family-owned company based in Bixby, Oklahoma, founded in 2009. The brand specializes in hand-built guitar effects pedals and prewired electronics kits, with all manufacturing done in-house at their shop in Broken Arrow, Oklahoma. Their pedal lineup includes the Paramount overdrive, the Pomeroy boost/overdrive (featuring six clipping voices and an active three-band EQ), the EM-Drive transparent overdrive, and the Concord utility buffer. Each pedal is assembled one at a time using hand-selected, premium audio-grade components.

Beyond pedals, Emerson Custom is widely known for their prewired wiring harness kits, which are drop-in electronics upgrades for Stratocasters, Telecasters, Les Pauls, SGs, and other popular guitar models. These kits feature the company's proprietary Premier Pro pots and premium capacitors, and are a staple upgrade among guitar techs and builders. Emerson Custom products are carried by over 100 dealers worldwide, including major retailers like Sweetwater.

Emerson has 17 products cataloged on Equipboard, including Overdrive Effects Pedals, Miscellaneous Guitar Parts, and Buffer Pedals. Their gear is featured by 13 artists, with the strongest followings in Rock, Pop, and Electronic. Notable users include Owl City, Justin Vernon, and Julien Baker.