Salvation Mods (now operating as Salvation Audio) is a Czech Republic-based boutique builder founded by Antonín Salva, specializing in custom guitar preamps, original effects pedals, and professional modifications of classic stompboxes and amplifiers. The company is particularly known for its work with modular preamp systems, offering hand-wired modules compatible with Synergy, Egnater, and Randall rigs that emulate the sound and response of legendary tube amps using analog components.

The pedal catalog includes original designs such as the Vivider octaver, the Tonewheel Ensemble Box analog chorus, and the Tonewheel Boost and Buff-Boost dynamic/transparent boosters, alongside a footswitch accessory for the Randall RM50 amplifier. On the modification side, Salvation is known for reworking staples like the ProCo RAT, Boss HM-2, Ibanez Tube Screamer, and Carl Martin Plexitone, tailoring them for rock and metal players who want more clarity, dynamics, or tonal flexibility from familiar circuits.

The brand has built its reputation within the rock and metal community through its focus on hand-built, analog construction and its association with session players, producers, and touring musicians. It is commonly referenced by its original name, Salvation Mods, as well as its current name, Salvation Audio.

Salvation mods has 21 products cataloged on Equipboard, including Guitar Preamps, Overdrive Effects Pedals, and Harmonizer & Octave Effects Pedals. Their gear is featured by 3 artists, with the strongest followings in Rock and Metal. Notable users include Billy Corgan, Pat O'Brien, and Wolf Hoffmann.