A compact and portable Roland CUBE 100 BASS amplifier for bass guitar. - Brand: Roland - Model Name: CUBE 100 BASS - Type: Bass Amplifier - Color: Black - Features: Compact design, portable, approximately 17kg - Connections: Multiple input terminals I purchased it used, so I don't know the manufacturing year. There are some scuffs and scratches, but I believe the condition is good. Sound output has been confirmed. I don't think there are any operational issues. I used it to play bass in a wind ensemble. In a large public hall (capacity of about 1,200 people) in the city, at a setting of about 3 out of 10, it was powerful enough to overpower three tubas. The previous owner apparently used it for band live performances and didn't find it lacking. Considering its power, it's compact and can be transported in a car. From the manufacturer's website: The CUBE-100 BASS, a 100W high-performance bass amplifier, joins the popular CUBE series, known for its powerful sound despite its compact size. While maintaining the high sound quality and ease of use characteristic of the CUBE series, it delivers high-power sound suitable for live performances, band rehearsals, and recording. - Compact yet boasts a powerful 100W output, providing ample power for live performances. - Supports a wide range of sound creation with 8 types of COSM amp models and 5 types of digital effects. - Versatile output terminals make it suitable for a wide range of applications, from live performances to recording.