Alternatives to the Airis Effects 51-Filthy

Mad Professor Stone Grey Distortion

Shared character: hard rock, distortion, high gain settings

Mooer Micro PreAmp 001 (Diezel Hagen)

Shared character: hard rock, aggressive playing, high gain settings

Black Country Customs Monolith

Shared character: metal, hard rock, distortion

MXR Super Badass Distortion

Shared character: distortion, aggressive playing, high gain settings

Mooer 002 UK Golden 900

Shared character: metal, hard rock, distortion

Vox Joe Satriani Satchurator

Shared character: high gain settings, distortion, aggressive playing

Mooer 015 Brown Sound Micro Preamp

Shared character: hard rock, aggressive playing, high gain settings

Tone City Double Engine T40 Rectified High Energy

Shared character: distortion, high gain settings

DigiTech Metal Master

similar tone character

Carl Martin Crush Zone

similar tone character

EarthQuaker Devices Zoar

similar tone character

Fortin Amplification Natas

Shared character: high gain settings, metal, distortion

Fortin Amplification 33

Shared character: metal, distortion, high gain settings

Diezel Zerrer 2-Channel Preamp

Shared character: metal, high gain settings, full

Friedman BE-OD Deluxe

Shared character: hard rock, distortion, aggressive playing

Universal Audio Uafx Anti 1992 High Gain Amp

Shared character: high end, aggressive playing, high gain settings

Electronic Audio Experiments Citadel

Shared character: hard rock, alternative, distortion

DryBell The Engine

similar tone character

Horizon Devices Precision Drive

similar tone character

Friedman IR-J Jake E. Lee Preamp

similar tone character

Airis Effects -Nemesis Preamp

Shared character: high gain settings, effects loop, hard rock

Suhr Riot Mini Black Edition

Shared character: metal, hard rock, distortion

Wampler Dracarys

Shared character: high end, metal, distortion

JHS PG-14 Paul Gilbert Signature Distortion

Shared character: high gain settings, hard rock, distortion

Friedman BE-OD

Shared character: metal, hard rock, distortion

Airis Effects SPEC-Defier

“designed the SPEC-Defier as a follow-up to their well-received 51-Filthy preamp”

Keeley Filaments

Shared character: distortion, aggressive playing, high gain settings

Carl Martin Greg Howe Lick Box

Shared character: high gain settings, studio, full

NuX NDS-5 Fireman Distortion Dual Brown Sound

Shared character: high end, hard rock, distortion

Dunlop TBM1

Shared character: effects loop, alternative, aggressive playing

Joyo Uzi Distortion

Shared character: metal, hard rock, alternative

Horizon Devices Apex Preamp

Shared character: metal, distortion, aggressive playing