This is a used Aguilar TLC Bass Compressor cosmetically in good condition and is fully functional. No power supply or battery. Will run off a 9v adapter or a 9v battery. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Compressors & Sustainers". The seller is "srz_audio" and is located in this country: US.This item can be shipped worldwide.