Maxon invented the Tubescreamer, so they're a great candidate to update it. This takes the 808 circuit, adds a voltage doubler under the hood, and delivers a fatter, smoother take on the genre that still delivers that glorious poke and detail. Plus, it's a satisfying size.

Model: Maxon OD-820 OverDrive Pro 
Made: Japan, 2000
Serial: 005I7121
Type: overdrive
Mods: velcro added
Power Input: standard 9v DC centre-negative supply or 9v battery (not included)
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)