This is a handy little dirtbox, voiced after the classic original 1978 Boss DS-1. It's a nod to the classic modded versions of that pedal, so it's got a 'crunch' switch which adds harmonic complexity (just leave that on!) and more gain and volume range. Perfect for grunge and punk stuff. 

Model: MXR Custom Badass '78 Distortion
Made: USA, recent model
Type: distortion
Power: standard 9v negative supply (not included)
Switching: true bypass
Equivalent new street price (approx): $149aud
Mods: none
Accessories: no box or manual
Condition notes: used, no major marks, fully functional. Overall: very good condition