9-Band Equalizer, High Performance, 9 Equalization Bands [9 Bands]: The car audio equalizer features 9 equalization bands (50 Hz, 100 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, 16 kHz), intelligent noise reduction, precise adjustment, and a subwoofer frequency range of 30 Hz to 120 Hz. [6 Channel Outputs]: This 9-band equalizer supports front left/right, rear left/right, and two subwoofer output channels. The subwoofer output and adjustment function enhance the in-car audio experience. [2 Channel Inputs]: The car audio equalizer supports CD and AUX inputs. The gain control allows you to adjust the AUX volume for improved sound quality. [Material]: The equalizer features a high-quality metal housing, operates on 12V DC, has a robust build, is easy to use, and has a long lifespan. [Easy Installation]: The audio equalizer is suitable for cars, boats, RVs, and other stereo systems and is easy to install. The integrated chip reduces background noise and ensures clear and precise sound. Power supply: 12 V DC Maximum output voltage: 8 V RMS Level range: 12 dB Subwoofer frequency: 30–120 Hz Color: Black Material: Metal + Plastic Package contents: 1 x Car audio equalizer Only the above package contents, other products are not included. Note: Light reflections and different displays may cause the color of the item pictured to differ slightly from the actual product. The allowable measurement deviation is +/- 1–3 cm.