Powerful Bass Performance: Rockville RTB80A delivers 400W peak power (200W RMS) with an 8" high-power woofer for punchy and impactful bass. Integrated Amplifier: Built-in 250W RMS amplifier ensures perfect tuning between the subwoofer and enclosure for optimal low-frequency sound. Customizable Sound Control: Features an adjustable bass crossover and a built-in bass equalizer with up to 18dB boost @ 45Hz for precise sound tuning. Durable and Compact Design: Aviation-grade tweed-covered vented enclosure with a rear aero vent system and molded steel woofer grill enhances bass output and durability. Easy Installation: Includes speaker-level and RCA line-level inputs, steel mounting brackets, and Velcro straps for quick and secure setup in any vehicle.