Esh is a bass guitar manufacturer founded in 1987 in Aachen, Germany, by three bassists — Erhardt, Sonntag, and Hövelmann — whose surnames form the brand name. The company built its reputation on distinctive body shapes and its proprietary Eshtronic onboard electronics, which pair active preamps with piezo bridge systems to produce the tonal character Esh is known for. Since 2012, the brand has been led by Petr Vykydal under NBE, with production based in Hořovice, Czech Republic.

The lineup centers on a handful of core models: the Stinger, Various, Sovereign, and Poseidon. The Sovereign uses Esh's UC bolt-on neck system and an ergonomic body geometry designed for upper-fret access, while the Various traces its design lineage to Esh shapes from the 1990s. Across the range, the basses are often described as having a darker, more aggressive visual and sonic identity than mainstream competitors.

Esh has been used by players in the metal and hard rock world, including Peter Steele of Type O Negative, Adam Duce of Machine Head, Ted Lundström of Amon Amarth, Mikael Hedlund of Hypocrisy, Kay Lutter of In Extremo, and Hiisi of Lordi.

Esh has 5 products cataloged on Equipboard, including Electric Basses and Guitar Amplifier Heads. Their gear is featured by 5 artists, with the strongest followings in Rock, Metal, and Electronic. Notable users include Peter Steele, Nigel John Taylor, and Adam Duce.