Pioneer DEQ-9200 3-Band Car Equalizer

Now, THIS is fine tuning. The DEQ-9200 DSP audio processor is a powerful tool for customizing how you want music to sound in your vehicle. It features a DSP audio processor with Auto EQ for a huge variety of sound preferences, and Legato Link conversion for the purest sound possible. A multi-color EL display, extra-capacity battery, and detachable face security (with case provided) are additional features.

As an EQ, a crossover or a DSP, the DEQ-9200 is easily worth the...

Pros: Flexible setup options, great sound, AutoEQ gives ruler-flat response
Cons: slight output noise, display washes out in direct sunlight
If you are an audiophile or enter car stereo competitions, this should be on your short list of audio accessories. Its flexibility, sound quality and versatility make it a fine centerpiece for any high-end system with external amps.