7 Equalization bands, adjustable from -12 to +12dB. The subwoofer frequency is adjustable from 30Hz to 120Hz. Powered at 12 Volts with 6-channel front, rear, and subwoofer aux stereo output to enhance your car audio experience, ensuring your amplifier and speaker receive a strong and clear signal. Supports CD and Aux (2 channel) input with gain knob for aux volume adjustment. Includes a CD & AUX input button for easy switching between input modes. Features flexible controls including subwoofer volume control, subwoofer frequency control, fader control, and individual frequency band controls. This car equalizer operates on DC 12V power. Durable metal chassis with high-quality rotary knobs provides a premium feel. Material: Metal Color: Black Note: This product is a car equalizer and must be used with a power amplifier (not included) to achieve optimal output performance. Package Contents: 1 x Car Audio Equalizer Only the above items are included; other accessories are not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3cm.