JL Audio CL441DSP CleanSweep OEM Audio Interface

• Accepts Virtually Any Analog Audio Signal.
• 32-Bit SHARC DSP Processor.
• 30 Bands Of Equalization

Works beautifully! Dramatically improved sound quality in conjunction with a nice amp. Was used in an 09 VW GTI w/ the premium package and Alpine MRV 1507 powering front components only.

Cons:

Have to use JL Volume Knob for optimal sound

Renders steering wheel volume controls useless (mute button still functions)

Aux audio input is non eq'd

I love this product and the additional volume knob doesn't really bother me.

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This is a really cool device, however I would reconsider replacing the OEM head unit with an aftermarket for the cost. Make sure you get the JL Audio Test CD to calibrate the unit.

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This unit really works with factory stereo player. It's amazing. Read the review from others and willing to try it. The sound quality is clear but if you set the gain too high on it, you will hear static noise. If it wasn't for that I would rate it 5 stars. Overall I am satisfied. Just make sure you have professional installing it, someone who knows what they doing.

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I currently have this installed with an XD600/1 amp to sub. I bought this with the thought that I can expand with another amp in the future. Rather than get a filter for OEM integration I went with a much pricier solution to allow a cleaner expansion in the future. So far the sound is great.

I don't get a hiss sound from it as reported from others.

The JL audio sweep allowed me to keep my original head unit and was easily installed. Great product and service!