Brand new JBL subwoofer. 350 plus tax new. Has cosmetic flaw as shown in picture. This does not affect use. Tatum and Shea. Product Description JBL Studio 550PBK 10-INCH (250mm) subwoofer with built-in 300W RMS amplifier Looking for an overwhelmingly accurate and deep bass. Try JBL Studio 550 subwoofer with built in 300W RMS amplifier. Innovative materials and cutting- edge technology have always put JBL products out in front of the competition's. So expect extreme output from us and be prepared for a high impact performance that may surprise you. The JBL Studio line of loudspeakers, which incorporates the very best in modern design and proven technology, is becoming one of the industry's most recognized and admired. JBL Studio 550P at a glance: 10-INCH (250mm) low-frequency transducer Built-in 300W RMS amplifier Sealed enclosure Forward-firing transducer provides maximum bass impact LFE and line level inputs allow proper operation with a variety of receivers and processors Adjustable crossover frequency optimizes subwoofer performance Phase control increases installation flexibility Metal floor spikes improve bass impact and reduce unwanted boominess in the sound Auto turn-on and turn-off for more convenient use and to conserve energy Key Features 10" (250mm) low-frequency transducer 10" (250mm) low-frequency transducer on the JBL Studio 550P delivers deep bass impact and excitement to make you feel like part of the action. The PolyPlas cone material increases cone stiffness and damping for tighter, more extended bass without breakup or distortion. The cast-aluminum frame maintains precise alignment for consistent performance in all conditions and at all volume levels while dissipating heat for increased power and handling. Built-in 300W RMS amplifier High-power amplification for louder volume with less distortion results in a more realistic bass while generating less heat than lower-powered amplifiers when operating at higher outputs. Glass-filled ABS Bi-Radial High-Frequency Horn The glass-filled ABS Bi-Radial High-Frequency Horn is controlled directivity at ear level of seated listeners minimizes unwanted HF interaction with walls and furniture, which creates cleaner, more realistic HF sound over a wider listening area. Exclusive Design Clean and Dynamic, one-of-a-kind look makes a dramatic design statement in any room. JBL Studio 520C is available in black finish.