Indoor use only. There is some minor deterioration on the bottom, but otherwise, there are no major scratches. Power operation has been confirmed, so it is sold as-is, no returns. Please ask any questions in advance. The following is an explanation generated by AI. We are not responsible for it. A Roland BASS amplifier with a robust case design and various control knobs. - Brand: Roland - Model Name: BASS - Controls: Various knobs and switches - Design: Robust case design - Speaker: Speaker with mesh grill Thank you for viewing.