We scored this in a trade form a local customer, it's a nicely assembled little clone of the original 70s Electro Harmonix Linear Power Booster. It'll push your amp into a creamy, thick drive with plenty of character.

Model: General Guitar Gadgets CB1 
Made in: parts China, assembled Australia (no serial)
Type: boost,EHX LPB-1 style
Power: standard 9v supply
Equivalent new street price (approx): n.a
Mods: none
Accessories: no box or manual
Condition notes: used, few minor marks, fully functional. Overall: very good condition