This is a Victor VOSS Class D power amplifier. It was in use until recently, so it works well. It's a 4-channel, fanless model with good sound quality, making it a very user-friendly amplifier for home use. Rated output: 4 channels: 260W x 4 at 4 ohms, 150W x 4 at 8 ohms These types of professional amplifiers are often handled roughly in stores and facilities, and there are many poorly-maintained, junk items in the used market. I think that items in good working condition are relatively rare. The condition has some scratches on the top panel, but otherwise, there aren't too many severe scratches, and I think it's an average used item. Thank you.