DESS is a French manufacturer of guitar and bass rig hardware based in Montaigu, France, founded by Antoine Desmet. The company designs and builds effect switchers, pedalboards, power supplies, and MIDI controllers in-house, with products hand-crafted in aluminum for a lightweight but robust construction.

The lineup centers on programmable effect switchers available in pedalboard or rack format, capable of routing up to 14 effects, switching amp channels, sending MIDI, and adjusting volume from saved presets. The HPB-2 modular pedalboard series (offered in 360, 540, and 1080 sizes) and high-output power supply blocks with 5 to 20 outputs round out the catalog. A custom shop branch handles bespoke pedalboard builds, cabling, and rack integration for atypical rigs.

DESS has built custom rigs for French artists including Jean-Louis Aubert and Matthieu Chedid (-M-), and the workshop doubles as a fitting and demo space for professional clients.

DESS has 2 products cataloged on Equipboard, including Effects Processors and MIDI Foot Controllers. Their gear is featured by 1 artist, with the strongest followings in Rock, Pop, and Folk, World, & Country. Notable users include - M - (Matthieu Chedid).