Gear with a similar tone character to the Universal Audio knuckles

Boss SD-1 Super OverDrive

similar tone character

Friedman BE-OD

similar tone character

Horizon Devices Precision Drive

similar tone character

Fulltone Fulldrive 2 MOSFET

similar tone character

Catalinbread Airstrip Console Pre

similar tone character

Catalinbread Karma Suture

similar tone character

Cusack Music Screamer Fuzz V3

similar tone character

EarthQuaker Devices Barrows Fuzz Attacker

similar tone character

Sola Sound Tone Bender MK1

similar tone character

Colorsound Power Boost

similar tone character

MXR Super Badass Distortion

similar tone character

Amptweaker Tight Metal

similar tone character

JAM Pedals TubeDreamer MK2

similar tone character

Maxon OD808

similar tone character

Amptweaker Fat Rock

similar tone character

EarthQuaker Devices Hoof Hybrid Fuzz

similar tone character

Keeley Super AT Mod Overdrive Limited Edition

similar tone character

Mythos Golden Fleece

similar tone character

Catalinbread Gailieo Red Treble Booster

similar tone character

Catalinbread Carbide

similar tone character

Ibanez TS9 Tube Screamer

similar tone character

Caroline Guitar Company Crom Hi-Gain Fuzzstortion

similar tone character

JAM Pedals Fuzz Phrase Si Silicon Fuzz

similar tone character

Díaz Texas Ranger

similar tone character