Greyscale Devices is a boutique guitar effects pedal builder offering a small lineup of hand-built stompboxes that lean toward vintage-flavored designs and faithful recreations of classic circuits. Their catalog has included the Echo Machine+ delay, the Reverb and Reverb Deluxe, a Vintage Wah modeled on the VOX V846 wahs of the 1960s and 70s, and the Tone Machine, a take on the Foxx Tone Machine octave fuzz.

The brand also caters to bass players and noisier textures with pedals like the Amulet, a low-gain bass overdrive aimed at adding low-mid grit without sterilizing the signal, and the Death Filter, a clone of the Death By Audio Sound Saw. Other releases have included the Hellcat overdrive and an Octave Fuzz Metal. The pedals are typically housed in plain, utilitarian metal enclosures with simple control sets, fitting a no-frills boutique aesthetic.

Greyscale Devices pedals have been carried by boutique retailers including Boutique Pedal NYC and circulate on the used market through Reverb, where the brand has built a quiet reputation among players looking for affordable takes on vintage circuits and rare effects.

Grayscale has 4 products cataloged on Equipboard, including Modular Synthesizers. Their gear is featured by 3 artists, with the strongest followings in Electronic and Pop. Notable users include Richard Devine, Andrew Huang, and Moderat.