Scosche SLC4 Line Output Converter/OEM Premium Amplifier Adapter - 4CH LOC High/Low RCA Converter Car Audio - Add New Amp or Retain Factory Amp - Line Level Converter for Car Stereo - Quality Sound

Justo lo que necesitaba! Pequeño, fácil de instalar detrás del estéreo y de ajustar. Con esto queda completa mi instalacion.

The converter is sealed away in the dash, so I was worried the levels might drift, but I've used it through 4 seasons and drift minimal if any.

Works great! It sounds amazing on my Bose 2000 Miata LS. I didn't even need to change any of the gain adjustment settings; I just set it on factory amplifier. Wish the ground wire was longer, but you can extend it easily. Installation was very easy, just had to clamp down head unit and car wires to it (only ground was too short). Good price, specially since I don't have to tear out the bose sound system.

I used this to integrate into my factory BOSE amplifier/speakers with an aftermarket Android head unit on my 2007 Nissan Armada LE. I read the instructions (as well as reviews) and was very careful when torquing down the speaker wires. I would have preferred to put wire ferrules on the speaker wires and then connect them to the LOC but I did not have faith the screws would be strong enough to crush them properly. Ideally, I would have preferred to have a wiring harness (like on other LOC units) so I could solder the wires from my head unit and have a more secure connection. The gain controls seemed flimsy - I followed the instructions not to push down as you turn them but had to apply an uncomfortable amount of force to break them loose initially. In my case, I had to max them all out (I suspect due to the weak signal from the Android head unit) and the arrow on one was not aligned to the others. That said, everything is working and sound is now good but I worry about how long it will last as the entire unit feels fragile. I also recall using one of these units in the past and having it fail so I do not have a lot of faith in it. As another reviewer noted, the colors on the pre-outs were not correct (switched red/white for front back) but I used the labels as a guide. All in all, assuming it keeps on working, it's hard to beat for the money. Just don't expect LCI quality.

It's a great LOC for a 4 channel system which most of the cars use these days. I used it on my car with a factory amp, and that was the main reason to use this as I upgraded the head unit with an aftermarket one. The factory amp just could not digest the hi level input from the aftermarket head unit harness, causing all kinds of static noises. This one got 95% of the buzzing noises. Sometimes I still heard a bit of noise. I returned the unit in the end and went with a 2 of higher quality LOCs which completely removed the buzzing noise. My car is a Honda CRZ which uses a hybrid system, and it's notorious for making static noise compared to non hybrid engine cars. so maybe, this LOC will work for your car if your car is a pure gas car or elec car.