The OEM JBL Duet #A481511OT Power Supply is a black power cord specifically designed for the JBL Duet model. It features a 15V output voltage and a 1:5 connection split/duplication, making it suitable for powering various electronic devices. This power supply has been tested and confirmed to work, ensuring reliable performance. With free shipping included, this product offers a convenient solution for powering your JBL Duet and other compatible devices.