1. The car audio graphic equalizer has variable gain adjustment and high-level speaker input, which is very practical. 2. 6-channel output: front, rear, and subwoofer auxiliary stereo outputs to enhance your sound experience in the car. This ensures that your amplifier and speakers receive a strong and clear signal. 3. 2-channel input: The car audio equalizer supports CD and Aux inputs, with a gain knob to adjust the auxiliary volume, providing better sound quality. 4. Independent subwoofer output and adjustment function, adding bass to make the car audio more shocking 5. Compatible with a variety of devices, installation only requires connecting the corresponding interface 6. The equalizer adopts a metal shell and DC 12V power supply, with high texture, easy operation, and long service life. 7. Karaoke function with microphone, external sound input sensitivity adjustment 8. Maximum output voltage: 8V RMS 9. Leveling range: 12dB 10. Subwoofer frequency: 30Hz-120Hz