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160W, 4-Channel Line Output Converter with Digital Noise Filter + Line Driver

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Product Features:

  • 4-channel Premium adjustable line output converter
  • Digital Noise Filter + Line Driver
  • 3:1 Step Down With Adjustable Output
  • DC Amplifier Turn On Trigger
  • 160w Maximum Input Total (40w Per Channel)
  • Super Low Distortion
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

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Browse 11 questions and 52 answers
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Why did you choose this?
Sonic Electronix Store
Using to connect factory head unit to amplifier. Plus adjustability.
Richard N on Jun 23, 2016
Using my stock head unit and your youtube videos made my decision easier. One shop stop
pedro b on Nov 27, 2015
Great reviews, great company, great features on the LOC, looks like a solid built product!
Alex G on Apr 11, 2016
Needed something to reduce the high output on a radio to amp install
brent r on Oct 6, 2015
I have one of these in my truck so I could add a 4-ch amp off the factory radio. I am randomly getting an intermittent buzzing from one of the speakers when I turn on the parking/head/dash lights. I did not do the install, local shop did it. What can I look for to help isolate the source of the buzzing?
jp3457 on Oct 7, 2015
Best Answer: Can you get a picture or diagram as to how the device is connected.

Typically all you would need to hook up the XFLOC4 is to tap the speaker wires only.

This does not require power provided you are not using the XFLOC4s remote turn on function.

For me to diagnose the issue I need to know how the device is connected. You can reach me directly @
Reply · Report · Brian MStaff on Oct 7, 2015
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What is the size of the enclosure (H x L x W) for both products please? I have to install the converter in a very small space:-) on Jun 12, 2015
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Xscorpion LC07
· Add Answer · I Have This Question Too (1)
Will this work both ways (as in from RCA line level to speaker level)?
Dom B on Oct 22, 2014
Best Answer: Technically information can travel both ways through the wiring and box. However a line level is used as a transformer to convert Higher voltage used on a factory system to a lower voltage required by an aftermarket amplifier. I can't think of a setup where you'd want to try and convert a lower voltage from a signal source like an aftermarket amplifier or stereo to a higher voltage source? There's too many other ways to supply a signal to speakers using standard output terminals and wiring or to provide low level RCA out to a low level RCA in. If you wanted to go from an amp to a factory deck that will not work as factory decks use the hi volt wiring as output only.
Reply · Report · Donald E on Oct 22, 2014
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I would like to use this unit to tap into factory head unit before the factory amp and send signal to a DSP, which takes RCA inputs for the pre-amp input. The HU has a balanced signal (+ -) for left and right. The DSP has input sensitivity of 2 to 4 volts. Will this product work for me?
Larry R on Sep 26, 2015
Best Answer: Yes, but I had constant buzzing. It drove me crazy, so I replaced factory head unit with a pioneer and all the buzzing was gone. Good luck.
Reply · Report · JB3 on Sep 28, 2015
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Will this be compatible with my stock fiber optic speaker wires of my Bose system in my 2004 Mercedes?
brian on Nov 4, 2014
Best Answer: Yes and No. No because Fiber optics run off of an "IR" signal (infrared). This type of LOC works off of high level signals. Yes because You will have to find the actual factory amp location, go to the output side of the amp where it will have high level outputs and tap the unit in there. It'll take a little research to get the wiring diagram for you model but it can be done. Good luck and take your time doing the job.
Reply · Report · Ryan M on Nov 5, 2014
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will this work with a 2012 dodge ram 1500 stock stereo?
A shopper on Apr 26, 2016
Best Answer: Yes. All you do is find the wiring diagram for your stereo via the Internet. Figure out which wires go to which speakers and splice the wires from the box to yor stock speaker wires. Do not dicomnect your speaker wires unless you plan on running an amp your speakers. But if you are using it just to install an amp it will be good just spliced.
Reply · Report · Ryan V on Apr 26, 2016
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Does the DC Amplifier turn-on trigger replace the need for the remote turn-on lead from the head unit to the amp?
Don S on Oct 23, 2015
Best Answer: Yes it does, but for me I installed a remote turn on anyway because my amp turns on as soon as I open my car door. I wanted the amp and speakers to be turned on and off with the ignition so I opted to install a remote turn-off wire even though it is not necessary.
Reply · Report · Blake F on Oct 23, 2015
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2004 BMW 325CI convertible w/ business class hifi audio system. I will be replacing the factory deck to BOSS AUDIO BV9967B w/ Polk 6 1/2 for doors 5 1/4 polk 3/4 component for rear side panel w/ a powered Infinity Subwoofer in trunk. Do I need a "output Converter" for the factory AMP and speaker wire hookups?
Erik R on Mar 1, 2016
Polk Audio db651s
Polk Audio db651s
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Boss BV9967B
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Polk Audio 2-db651s
Best Answer: No you will not need an output converter just a wiring harness. You can use the output from your new radio that is label (Front Rear Sub out) by hooking the power sub using rca audio cable to your sub out on the radio to the power woofer. No speaker wire is needed just a radio harness. But for better sound add a outboard amp to power those speakers you will a happy man. You will need speaker wire and a amp kit to hook everything up. Look at the NVX product line will have everthing you need.
Reply (1) · Report · Brandon H on Mar 1, 2016
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How do i hook up a 5 channel amp to connect 4 speakers and sub with this loc? please help.
A shopper on Aug 23, 2014
Best Answer: Hello,

Unfortunately, You cannot get a Fifth channel out of a Four Channel LOC. You will need to split the signal, which is a bad idea; because you will dramatically degrade the quality of the signal after the split. Doing this is still not uncommon, but we don't condone the practice.
Our suggestion:
either an EQ with Four High Level in that then gives you a 'Sub' Out, like the NVX XEQ7
the AudioControl LC7i-GRAY, which has the ability to also take Only Four High Level ins, and provide a Sub Out. The AudioControl LC7i-GRAY is far more user friendly, and slightly better SQ.


AudioControl LC7i-GRAY
Reply · Report · Customer SStaff on Aug 24, 2014
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Any other's with a higher power output ? If so, part number please.
Kevin W on Dec 2, 2015
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Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: NVX XFLOC4