Alternatives to the MXR M103 Blue Box

MXR Poly Blue Octave

“expanding on MXR's classic Blue Box with four independently controllable octave voices”

Catalinbread Perseus

Shared character: each_note, mono_synth, tight_tracking

Boss SD-1 Super OverDrive

Shared character: other_distortion_pedals, users, durable_construction

Univox Super-Fuzz

Shared character: each_note, fat, raw

Ibanez TS9 Tube Screamer

Shared character: durable_construction, volume, full

Boss DS-1 Distortion

Shared character: other_distortion_pedals, durable_construction, pedal

Way Huge Electronics Green Rhino MkII Overdrive

Shared character: tonal_possibilities, users, fat

Source Audio Soundblox Multiwave Distortion

Shared character: mono_synth, one_octave, pedal

EarthQuaker Devices Data Corrupter

Shared character: each_note, mono_synth, tight_tracking

Fairfield Circuitry The Unpleasant Surprise

Shared character: mono_synth, fat, one_octave

ProCo RAT 2

Shared character: volume, full, thickness

EarthQuaker Devices Eqd-Bit

Shared character: each_note, mono_synth, tight_tracking

EarTech Earthquaker Devices Data Corrupter Modulated Monophonic

Shared character: each_note, mono_synth, tight_tracking

Boss FZ-5 Fuzz

Shared character: pedal, fat, one_octave

EarthQuaker Devices Bit Commander V2

Shared character: mono_synth, tight_tracking, one_octave

Electronic Audio Experiments Eldritch Blast V3

Shared character: mono_synth, one_octave

Eventide KnifeDrop

Shared character: durable_construction

Pigtronix OCT2

Shared character: tight_tracking, one_octave

Black Arts Toneworks -Fnord

similar tone character

Dunlop MXR SUB Machine

similar tone character

JHS Pedals JHS Coyote

similar tone character

JAM Pedals Octaurus

similar tone character

MXR M115 Distortion III

similar tone character

DOD Carcosa

similar tone character