Check the listing for details. A3S AUDIO DBP-3DP PRO Digital Bass Restoration Processor-9v Output Line Driver. Condition: New. Listed at 69.95 USD. Enhance your audio experience with the A3S AUDIO DBP-3DP PRO Digital Bass Restoration Processor. This versatile signal processor is designed to improve the quality of your music by restoring the original bass tone. It has a maximum output voltage of 10V rms and a frequency response of 10Hz-30KHZ (+/-3dB). The A3S AUDIO DBP-3DP PRO is perfect for car audio and vehicle electronics. It is a Bass Enhancer, Signal Processor, and Line Driver that offers a 9v output. This device is ideal for music enthusiasts who want to enhance their audio experience. Get your hands on this high-quality signal processor today! ass frequency digital processorExtend bass frequency response below physical low-frequency cut-offProcessor includes advanced DSPSigma Delta ADCDAC and high-quality analog circuitryAdjust the bass enhancer and threshold with easePerfect for iPod lovers who want there Bass Back!Adjustable input and output levelLeft and right RCA in/outLED clipped signal indicator