Review on Enhanced Audio Control DQ-61 OEM Sound Processor by Bob Berry

If you are an audio lover and understand how to connect this type of equipment, you will love it. If you have a stock head unit you know you have limited audio output options such as EQ, subwoofer control, this DQ-61 gives you more flexibility in your system and actually turns your head unit into a quality aftermarket system. You must have aftermarket amps to use this and I would suggest swapping out your factory speakers to get full sound quality. I will say that if you know someone with an RTA, you can count on setting up the system properly. You may need to go to a stereo shop.