Bass Restoration Processor, Included Tremor Control + 16ft RJ11 cable + Mexico Edition Sticker Advanced Tecnology: The Stetsom Tremor was developed with a technology that digitally recreates low frequencies and insert these recreated frequencies to the music enhancing the bass bringing more glow to the ears More dynamics, immersive, deep and powerful Bass experience Adjust Frequency range by the WIDE control from 30Hz to 250Hz Adjust the emphasized frequency by the SWEEP control from 27Hz to 63Hz Adjust Level from the Driver's seat with the Tremor Control on your Dash Transform your car's audio experience with the Stetsom TREMOR STT42 Digital Bass Restoration Processor. This powerful unit is engineered to enhance your vehicle's sound system by analyzing audio signals, recovering lost low-frequency tones, and boosting overall bass performance. Utilizing sophisticated algorithms, the TREMOR STT42 identifies and reintroduces bass information that may have been lost during production or transmission, delivering a rich and immersive listening experience. Its user-friendly controls, including knobs for wide and sweep bass adjustments, allow you to customize the bass levels to your liking. The processor also features input and output connections for seamless integration with your car's audio system. Compact and easy to install, this bass restoration processor is a must-have for anyone seeking top-notch sound quality on the road.