Manufacturer: BOSS This is a BOSS ME-20 guitar multi-effects processor. It was mainly used at home for practice, and not used much outside. Operation has been confirmed, and it works without any problems. ★Included Items ・Main unit ・Adapter ・Box →As shown in the photos, the box does not have the inner cardboard dividers. Also, the rubber on the bottom of the box has deteriorated and stuck, so newspaper is placed inside. ★Shipping The item will be shipped in the box as shown in the photos, with cushioning material inside. Although it has been some time since production ended, it incorporates representative compact effects pedals like the BOSS BD-2, and I think it's a wonderful effects processor that is still usable today. You can feel the aspects that have been passed down to the current GT-1, such as the sturdy aluminum body, easy-to-understand operability, and compact size with battery power. The sound is surprisingly good, and I think it has more than enough specifications for live performances. I will repost the instruction manual link below, so you can download it to view it. BOSS - Support - ME-20 - Owner's Manual https://www.boss.info/jp/support/by_product/me-20/owners_manuals/b5f5aa2c-ee66-4c96-bce7-3b6ed3cebbd5/