Alternatives to the BK Butler 911 Tube Driver

Electro-Harmonix Big Muff Pi

Shared character: singing, boost, thickness

Tone City Big Rumble

Shared character: boost, thickness, rich

Xotic BB Preamp V1.5

Shared character: boost, thickness, overdrive

Catalinbread Dreamcoat Skewer Special Edition Box

Shared character: singing, boost, thickness

Sonicake MiniLane Blue Skreamer Overdrive

similar tone character

Donner Dumbal Drive

similar tone character

J. Rockett Archer

similar tone character

Keeley Red Dirt Overdrive

similar tone character

Wampler Paisley Drive Deluxe

similar tone character

Greer Royal Velvet

similar tone character

Electro-Harmonix Spruce Goose

similar tone character

Tech 21 California Overdrive

similar tone character

Vemuram Butter Machine

similar tone character

Bixonic Expandora

Shared character: boost, thickness, rich

MXR Custom Shop Joe Bonamassa CSP265 FET Driver

Shared character: singing, boost, rich

Colorsound Power Boost

Shared character: singing, boost, thickness

Ibanez TS808 Tube Screamer

Shared character: boost, thickness, overdrive

Walrus Audio WAL-385/MK2 #BK

Shared character: thickness, overdrive

Rodenberg SL-OD

similar tone character

Ibanez WH10V3

similar tone character

Wampler Belle

similar tone character

Maxon VOP-9 Vintage OD PRO

similar tone character

Crazy Tube Circuits Hi Power

similar tone character

Univox UD-50 Uni-Drive

similar tone character

Dunlop Way Huge WM31 Supa-Lead Overdrive

similar tone character