YAMAHA Yamaha bass amplifier B100Ⅲ. I have checked the sound output by connecting a bass guitar to the speaker for this listing. Sound is produced, but I do not have measuring instruments, so I cannot confirm if it meets the specifications, and I have not tested it for an extended period. I have checked as much as possible, but there may be defects that I have overlooked. The condition of the product is based on my personal subjective assessment. Please refrain from purchasing if you are concerned about the condition. This is used equipment. There are many scratches and stains. It will be sold as is. This is a rare and famous model, so I cannot offer a discount. Thank you for your understanding. ・Height: 200 x 565 x 310mm ・Accessories: None Free shipping. Instant purchase available.