Alternatives to the Mad Professor MP-Aod

One Control Hooker's Green Bass Machine

Shared character: bass, warm, overdrive

Mooer MOD2 Rumble Drive

Shared character: bass, warm, overdrive

Carl Martin Bass Drive

Shared character: grit, mix, warm

Ashdown James LoMenzo Mega Drive

Shared character: grit, mix, warm

Electro-Harmonix Battalion Bass Preamp

Shared character: grit, bass, overdrive

Electro-Harmonix Nano Operation Overlord

Shared character: mix, bass, overdrive

EarthQuaker Devices Scrolls V1

Shared character: grit, warm, bass

NUX 59 Bass Guy

Shared character: warm, overdrive

Ashdown Pro FX Retro Drive

Shared character: grit, gain, bass

Boss BB-1X

Shared character: mix, warm, bass

Electronic Audio Experiments Greathammer Bass Driver

Shared character: brand, bass, warm

Boss ODB-3

Shared character: grit, mix, warm

Mad Professor Blueberry Bass Overdrive

Shared character: warm, bass, overdrive

Behringer BOD400 Bass Overdrive

Shared character: grit, mix, warm

Dunlop MXR M85 Bass Distortion

Shared character: grit, mix, bass

Tech 21 DP-3X Dug Pinnick Signature Bass Distortion

Shared character: mix, bass

Roger Mayer Voodoo Bass

Shared character: bass, warm

Laney Black Country Customs Blackheath Bass Distortion

Shared character: gain

Catalinbread SFT

Shared character: bass, warm, overdrive

Ampeg F17-1

Shared character: warm, gain, bass

Ashdown Geezer Butler Signature

similar tone character