For sale is the ZOOM B1 FOUR bass multi-effects processor. I am selling it because I purchased new equipment. I bought it around 2020 and only used it indoors. It's hard to see in the photos, but there are some scratches and minor imperfections from use. I have confirmed that it works with the adapter, AA batteries, and USB connection. It works without any problems. The system version is ver2.0. The included accessories are as follows: ・Main unit ・Original box ・Seven documents, including the quick guide (The patch cable in the second photo is not included) Available for immediate purchase. Thank you for your consideration.