Is it a boost, an overdrive or a pre-amp? Well, kinda all of the above, but it manages to sound awesome doing it all. The toggle switches between a flat/clean boost and a Tubescreamer-esque midrange hump. There's heaps of gain and volume range on tap, so this little mate is the handy cure-all if you're using different guitar/amp combos.  

Model: DMB Pedals Cosmic Crunch 
Made: Oklahoma CIty, USA, recent model
Type: overdrive/pre-amp/boost
Power: standard 9v negative supply (not included)
Switching: true bypass
Equivalent new street price (approx): n/a
Mods: none
Accessories: no box or manual
Condition notes: used, few minor marks, very good condition