JL Audio CL441dsp CleanSweep

The end result is outstanding; exceptional sound quality. My advise is to ensure you go to a certified JL Audio installer, as my installer stumbled multiple times. First the system sounded awful and the telephone didn't work. He finally figured out I needed to have the JL Audio SSI (Signal Summing Interface) added. He then again stumbled on the installation. I ultimately started over with a JL Audio certified installer. He first called and told me my head unit was defective. After I 'pushed back a little', he agreed to talk with Tech Support. He learned I needed yet another part (small cost, not sure what it was) to get the factory phone connections to work.

Pros:
- Sound quality
- Normalized connections to allow me to use an older 4 channel amp
- Allowed me to add use of my iPod

Cons:
- Tricky installation (unless you have the right guy)
- Had to add another $100 plus part (the SSI)
- Volume can't be controlled from head unit

At first I was disappointed. It didn't work with my ford fusion mp3 cd player. The installer told me the unit might be defective as the signal would disappear after car was turned on. Exchanged unit, same problem! Installer put his stereo in which was was the 6 cd changer version and worked flawlessly. I bought off of him and am now happy. The sound quality from my components is amazing and the bass comes out at perfect response.

A lot of people think you install this and just replace speakers and expect it to improve sound. This is NOT what it's made for. It is to run your components and sub through aftermarket amps. for perfectly flat frequency. For best results you only use the volume control they gave you. You can still get acceptable sound through your decks volume control if you adjust the gain on the volume control and adjust the amp accordingly. People are very impressed with this setup and it is nice to now worry as much about getting your stereo, amps and speakers stolen with this stealth setup.

I was very disappointed with this piece of equipment! Installed into an '06 Accord, I was hoping this would allow me to keep the factory look (I quickly returned my other option the METRA TURBOKIT which is absolute junk, don't bother) while still having a great sound system...

Unfortunately that did not happen. The sound is always on the muddy side. Although CD's sound OK, strangely enough the radio sounded worse than stock! Not sure why that would happen, other than "cleaning" up the signals also increased the static noise.

On Ipod (aux input) you cannot turn up the volume too high or it will freak out, sounding like the tortured death of an electric xylophone and shut off for 2 seconds, then will start back up and repeat the process.

Definitely a waste of time and money... If you have to get decent tunes out of your ride and this is the only option (as in 03 to 07 accords), do what I did and trade in the car or go with the MTX REQ5 which is way better

this really does make my system sound better. it even has 8volt outputs to keep the signal pure. very nice. a little pricey though.

It also takes the place of a hi/low converter! Gives control back to the passengers great E.Q. alternative. Installation is difficult but well worth the time and effort!!!

Signal Sensing Adapter Allows the JL Audio CleanSweep to Work with Low Voltage Factory Systems