RCA Wired Subwoofer RTD217W. Did not have a receiver to test, but seems to be in good working order. Has some lught cosmetic wear. Please see pictures and feel free to ask questions! Thank you for shopping at Anomalous Treasures! We hope that you've enjoyed looking at our store! Please note that we offer next day and free shipping! If you have any questions about your purchase before or after your purchase please do so! We will reply same day except Sundays! Thanks again!