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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

  • Based on 444 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Nov 25
Order within 20 hours and 34 minutes
Available payment plans shown during checkout

Size: 4 Channel


Style: 100W


Color: Blue


Features

  • Unmatched Versatility - Compatible with a wide range of car audio systems, this high to low converter offers flexible installation options, making it a go-to solution for converting speaker wires to RCA line level signals or adding an aftermarket radio.
  • Seamless Integration - Integrate your factory stereo with an aftermarket amp using this line out converter and boosting your cars audio performance without complex rewiring. Or, add an aftermarket radio and keep your factory JBL or Bose amplifier.
  • Enhanced Audio Experience - Transform your car audio system with the Scosche SLC4 Line Out Converter/OEM Premium Amplifier Adapter, delivering crisp and clear sound quality for your subwoofer; perfect for audiophiles seeking high-fidelity sound.
  • Compact and Durable Design - Engineered by Scosche, the SLC4 line output converter is compact and built to last, fitting easily into tight spaces while maintaining durability; a reliable upgrade for any car audio enthusiast.
  • Optimal Signal Quality - Ensure maximum audio performance with this high-quality RCA converter for car audio, designed to minimize signal interference and deliver clean, powerful sound; the perfect addition to your custom car audio setup.
  • Trusted Brand - Backed by Scosche's Limited Lifetime Warranty and Lifetime Tech Support. Scosche, known for its commitment to quality car audio solutions, means you can trust the Scosche SLC4 RCA adapter to deliver exceptional performance.

Item dimensions L x W x H: 1.25 x 4.38 x 11.38 inches


Voltage: 14.4 Volts


Manufacturer: Scosche


Mounting Type: Surface Mount


Brand: Scosche


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 1.25 x 4.38 x 11.38 inches; 6 ounces


Item model number ‏ : ‎ SLC4


Department ‏ : ‎ car accessories


Date First Available ‏ : ‎ September 15, 2005


Manufacturer ‏ : ‎ Scosche


Country of Origin ‏ : ‎ China


Best Sellers Rank: #63,315 in Electronics (See Top 100 in Electronics) #7 in Car Dual-Channel Amplifiers


#7 in Car Dual-Channel Amplifiers:


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • Perfectly solved my problem!
Size: 4 Channel Style: 100W Color: Blue
I was installing an aftermarket stereo in my 1998 Mercedes SL500 with a factory amp. After connecting the speaker wires from the radio to the car's wiring harness, the lowest volume setting was entirely too loud. So I hooked the speakers up to the lineout RCA connectors instead, and the volume was way low (the lineouts were only 2 amps). I looked online for help, then went to two radio installation shops and no one knew what to do. After a little more online research I discovered this Lineout converter was specifically for this issue. It was super easy to install, and solved the problem! The gain adjustments allowed me to get the perfect volume calibration, and the sound is great. My only quibble with this is it's a little large to fit behind some dashes, but it could still be mounted out of view under the dash with longer speaker wires. ... show more
Reviewed in the United States on April 19, 2020 by Mark S.

  • ... line out configuration but the screw connections are not super secure for the tiny gauge wire that runs from ...
Size: 4 Channel Style: 100W Color: Blue
works well in the line out configuration but the screw connections are not super secure for the tiny gauge wire that runs from the oem head unit of my mini cooper. i have had to strip and re-attach a couple of the leads after they lost connection in super hot/cold environments. make sure you have a screw driver that is not too small. you need one that is exactly the size of the screw head so that you can tighten it firmly without slipping out, since the screw heads are tiny and the metal is kinda soft. someone already mentioned not to loosen them too much or they will fall out and you will for sure lose the screw. this almost happened to me and it would have been game over. i would have had to buy a new one. mine works best with all the gains at their max. tucks away fine and the loops on the sides are good for tiny zipties to secure it. ... show more
Reviewed in the United States on December 23, 2017 by an0nym0us

  • Works Great! Solved my problem!
Size: 4 Channel Style: 100W Color: Blue
This works like it says. Solved my problem with my factory amplifier. I couldn’t listen to the radio stations because they were too loud! Volume 1 sounded like it was on 25! This interface is a cheap fix and solved my sound problems. I highly recommend this to anyone at a great price!!
Reviewed in the United States on November 8, 2021 by Scott Nobles

  • Used To Integrate OEM HU to Amp
Size: 4 Channel Style: 100W Color: Blue
I have a 2016 Honda Accord EX-L with the premium (not bad, but not premium by most standards) audio system. What I did was keep the factory head unit (HU) and removed everything else. The Honda premium HU in my car actually has pretty clean and stable outputs, even for a factory unit. The problem I was having was that the line outs (speaker leads) signals from the HU were in that middle ground between the low and high level inputs on the amp. When attached to the low level inputs, there was this oppressive hum because the signal was too strong. When attached to the high level inputs, I was running the amp at full gains and the HU at 80% volume to have what I consider normal sound level. At full amp gain, I was getting some hiss. This device allowed me to hook up to the amp's low level inputs and reduce the signal from the HU to a level that the amp could handle. If you are having any hum or buzz, revisit your cable routing. You hear this all the time, but keep power/ground wires away from the audio signal wires. This applies even to shielded RCA and this device. I was still getting some hum until I realized my ground for the amp ran beneath the SCOCHE LOC, under the carpet. There is a black wire from the LOC that they say can be attached to a ground in case of 'noise', but depending on where I attached it to the body of the car, it made the noise worse. Play around with location and whether you will use it. ... show more
Reviewed in the United States on January 5, 2020 by M. Schneider

  • Does what it says, just not at a high level
Size: 4 Channel Style: 100W Color: Blue
I read every review possible for this device before purchasing it on Amazon. From what I could gather, it appeared to be a low-price option for my system that had a potentially good upside. I read some reviews stating that the connectors for the wires are bad (verified to be true - even with soldered wires, but it certainly shouldn't fall out!), and I read some reviews stating the the sound quality was reduced somewhere in the conversion process. The latter claim I can also verify to be true, which is why I am returning this product. More on this shortly. Here's what I was doing: I have a new car with a bad stereo (OEM - of course it's bad). I love music, and drive often - so I wanted a nice stereo. The first thing I did was replace the stock speakers to Polk MM651's and Polk DXi650's. This improved my sound, but not much (since they were likely getting like 5 - 8 watts RMS from my factory head unit). I installed an amplifier to help them really reach their potential - and wow did it ever - but I had the infamous alternator whine. After lots of troubleshooting, I realized it was the high level inputs that were causing it. So I purchased this unit to convert to a low level signal, hoping that would eliminate my alternator whine (although typically the whine is caused by ground loops, I was able to verify that mine was not). This device successfully eliminated my alternator whine, and my system was noise-free! So, in a sense, the device does what it says. However, I quickly noticed that the sound quality left something to be desired. It's hard to explain, but suffice it to say that there was something missing. Also, some of the notes sounded muddy to me at certain frequencies (I suspect the low end in particular, but I didn't leave it in long enough to analyze this further). I am returning this item because of this issue. After spending decent money (and lots of time) putting in speakers and an amp, I was not going to let the LOC be the weak link in my chain. So, I went and did what I should have immediately - I bought an AudioControl LC6i. This product is a POWERED line output converter, sums the incoming signal (useful if your stereo has active crossovers), has a built-in ground loop isolator (eliminates engine whine from ground loops), turns 4 channels into 6 (so you can run a subwoofer from it easily), is easy to install, has high build quality, and also sends as pure a signal as you can get from it with low noise (.01% THD I believe). Not to mention this thing amplified my signal so much that my amp is hardly even turned up anymore! LOVE this device. However, it is 5 - 7 times the price. Worth every penny in my opinion. Oh, and this is a nifty feature too: you can have this device remotely turn on the amp for you. So if you're like me and couldn't get your car stereo's remote trigger to work with the amp, you can simply relay this to the amp. Then the stereo will activate the LOC (via the speaker inputs), and the LOC activates the amp. This eliminated the "pop" noise when I turned on and off my stereo or plugged in my phone/iPod. Install Notes: Not as bad as some say, although the little screws can be a pain. Don't use the awful plastic tool they give you - use a real screwdriver. Adjusting the gains was easy. I had mine turned all the way up (since the device is passive, I can only imagine that turning the gains to anything but MAX is only lowering the signal from your head unit - it can't possible amplify it with no power). The device does feel flimsy, but it is solid enough to stay put in your car without worry of it breaking. Final Verdict: If you are an average person who just wants to eliminate alternator whine and you're sure it isn't a ground loop, or if you just need to convert to low-level signal for your amp and want to keep your factory radio, this may be perfectly fine for you. If you are someone building a nice audio system and value high fidelity sound, don't mess around with this thing. Go purchase an active (powered) line output converter and do your system some justice. ... show more
Reviewed in the United States on January 21, 2012 by D. Sourile

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