Bass overdrive, voiced on the famed AG500 bass head. The controls are really sensible for our low-end friends, so it'll dial in just right and scunge up the bottom end of a band mix with  panache. 

Model: Aguilar Agro
Made: USA, recent model
Type: overdrive, voiced for bass
Power: standard 9v DC negative supply (not included)
Switching: true bypass
Equivalent new street price (approx): $399aud
Mods: none
Accessories: original box and manual
Condition notes: used, no major marks, fully functional. Overall: excellent condition