Swedish made audio pro B2-70 active subwoofer. This was sold around 1997 and was top of the line for subwoofers. $1790 brand new. It was also upgraded with a 1997 pioneer speaker that in my opinion was the last great speaker of its class. These are extremely rare and fetch $500+ on the slim chance they are on the market. Asking only $250 since I don’t have to equipment to show it’s working. The last time I used it was maybe a year ago and it worked flawlessly. You’re more that welcome to bring your own equipment to test or I could come to you. Please feel free to ask any questions. Thank you