Available as an assembled Module and as a DIY project.
This Module is currently available.
Drainable Distortion with swappable Opamp Chips
This lil fella is based on the classic sound of the PROCO RAT - particularly when your battery starts to die. M4TM manages to cram this all into 2HP, with a swappable opamp chip, bass, treble, and distortion control so that you can color your sound
