Alternatives to the Vox CT-03BT

67Audio Harry Balz

Shared character: volume, true bypass, boost

Xotic BB Preamp V1.5

Shared character: boost, treble, gain

J. Rockett Archer

Shared character: boost, treble, gain

Knight Audio Technologies Kat-STB

Shared character: solid state, volume, boost

Blackstar Dept. 10 Boost

Shared character: solid state, volume, boost

Mad Professor Ruby Red Booster

Shared character: boost, true bypass, treble

Catalinbread Galileo

Shared character: treble, boost, response

Blackstar HT-Boost

Shared character: solid state, compression, boost

Colorsound Power Boost

Shared character: volume, boost, treble

Vertex Steel String Supreme SRV (Slight Return Edition)

Shared character: true bypass, compression, full

JHS Charlie Brown

Shared character: boost, compression, gain

JAM Pedals TubeDreamer MK2

Shared character: boost, treble, compression

Benson Amps Portable Distortion 424 MKII

Shared character: boost, treble, compression

Catalinbread Naga Viper MkII

Shared character: treble, boost, response

Maxon OD808

Shared character: true bypass, boost, response

Dallas Tuxedo Treble Booster

Shared character: solid state, boost, treble

Benson Amps Chimera Preamp Pedal

Shared character: volume, treble, boost

Demon FX Full BB Preamp

Shared character: volume, boost, treble

Maxon TOD-9

Shared character: bottom end, solid state, compression

Xotic BB Preamp

Shared character: boost, treble, gain

Catalinbread Silver Kiss MK2 2007 Reissue

Shared character: treble, boost

EarthQuaker Devices Zoar

Shared character: boost, treble, gain

Xotic EP Booster

Shared character: bottom end, volume, boost

Colorsound Overdriver

Shared character: overdrive, boost, treble