DESC: The EQS746 is a 7-band graphic equalizer used to make frequency adjustments from 50 Hz–16 kHz in seven frequency bands. The EQS746 can make adjustments to frequency peaks and dips caused by interior size, seat shape and material, or by other vehicle factors. Moreover, you can tune the level to boost or cut specific frequency points and create your own preferred sound. With the auxiliary input, you can equalize both the main audio source and another sound application such as a portable DVD player, TV tuner, or MP3 player. The 7-volt output level gives you a high signal-to-noise ratio to drive your audio system to full power with minimum noise. The subwoofer output feature a dedicated level control and a switchable 60 or 90 Hz low-pass crossover.