I confirmed that the sound works by connecting it to an amplifier before listing it. I am listing it because I purchased a new effects unit. I have never taken it outside, and have only used it indoors. Everything in the pictures is included. Box, instruction manual, and AC adapter included!! You can use it right away. [Important Notes] Knobs 2 and 3 have poor contact, and do not respond unless you press them in firmly while turning them. It seems that disassembly and cleaning would fix this, but I have never disassembled it. Please refrain from purchasing if you are concerned. In addition, there are scratches and dirt commensurate with age, but there is no stickiness on the rubber. Electric guitar Effects unit Zoom