Review of JL Audio VXi Line of Amplifiers with integrated DSP by Sounds Good To Me in Tempe, AZ

Review of JL Audio VXi Line of Amplifiers with integrated DSP

By Mugs:

A Sound Review: JL Audio VXi line of car amplifiers with integrated DSP reviewed by the car audio experts at Sounds Good to Me in Tempe, AZ.

JL Audio has just released their newest line of amplifiers with a built-in DSP. Like everything else in this world of technology and iOT where everything is run thru a computer, so be it with JL Audio’s new “VXi” flagship line of amplifiers with built-in DSP.  There are a total of 8 different amplifiers that covers pretty much any installation scenario one might encounter who wishes to bring the best in car audio to their vehicle.

One might ask “why is DSP even needed in a vehicle’s audio system?”  Well, there are a number of reasons for it and the most important reason has to do with the fact that in today’s vehicles the radio isn’t just a radio, it has become an integral component of the vehicles on board infotainment center and because it controls so many more functions it is virtually impossible to change out.

Another reason would be along with not being able to change the head unit the factory installs some real janky permanent equalization that can’t be tamed without a DSP to either boost or cut frequencies to allow a flat output response from the OEM head unit.  Once there is a “usable” response curve, one can than install an aftermarket amplifier and aftermarket speakers and have the in-vehicle audio experience only aftermarket can deliver.

If you don’t tame the janky peaks and dips the aftermarket amplifier will amplify those and it just sounds wrong.  Not terrible, but not right either and if your spending for an expensive amp and top of the line new speakers you naturally want to get the best sound for your money. With DSP processing we can actually determine the speakers frequency output and see just what frequencies need to be adjusted and adjust them thru the magic of digital manipulation.

JL Audio was one of the very first to see this coming down the road and they developed the “CleanSweep” CL441 DSP in 2006, so they are not a johnny come lately.  Today JL offers 3 standalone DSP / System Tuning Processors being the FiX82 & FiX86 along with the TwK88 & TwK-D8 for true digital to digital experience.

These are truly cutting edge technology and now JL has combined their XD amplifiers with their DSP units into one allowing unlimited tuning opportunities to enjoy a breathtaking audio experience when tuned correctly.  If you are into car audio like we are you will be hearing and seeing a bunch of new DSP products coming to market and you will be hearing claims about the features and many benefits of having DSP but it will come down to both installation and tuning experience and knowledge about the software and required tools to correctly tune a system.  

Watch this video to learn more about JL Audio’s VXi Line of Amplifiers with Integrated DSP

Read more about JL Audio’s complete line of car amplifiers with integrated DSP at: and at


  • Higher performance Differential-Balanced Analog Inputs accept speaker level signals up to 16V RMS, including those from factory systems. Outstanding noise rejection to prevent alternator whine and other noises.
  • Optical Digital (Toslink) Inputs permit direct connection of S/PDIF digital sources, bypassing A/D converter. Accepts up to 24 bit/192 kHz input
  • Automatic turn-on option via Signal-Sensing or DC-Offset sensing
  • RCA Analog, or Digital Pre-Outs at 24 bit/96 kHz
  • Flexible Input Router and Mixer
  • 10-bands of Fully Parametric EQ per output channel
  • High-Pass & Low-Pass Filters for each channel:
  • 12, 24, 48dB/octave Linkwitz-Riley
  • 6, 12, 18, 24, 36, 48 dB/octave Butterworth
  • Signal Delay in 0.01 ms steps (1/8-inch, 3 mm)
  • All-Pass Filter (Phase EQ), with variable “Q” and corner frequency
  • Polarity reversal
  • Output Level Trim in 0.1 dB steps
  • JLid connection ports for accessories

We would be happy to answer any of your questions either by email or just stop on by Sounds Good To Me in Tempe, Arizona just south of Arizona State University’s main campus, talk us and let us show you the future here and now.

For the best in car audio electronics at rock bottom prices visit Sounds Good To Me car audio & video electronics and security alarm system installation specialists are located in Tempe, AZ, servicing the entire metro Phoenix area including Mesa, Chandler, Scottsdale, Glendale and Gilbert, Arizona.Call us at (480) 968-8543, visit us at or contact us by email at Remember to check out our blog for frequent product reviews as new audio auto and vehicle electronic gets released.

6 thoughts on “Review of JL Audio VXi Line of Amplifiers with integrated DSP

  1. The VXI amplifiers are based on the XD line of amps combined with a dsp, not the HD amps, as stated in the article.

  2. Man what an amazing amplifier, JL Audio is doing it right by putting the DSP into the amplifier. I’ve had it happen way to many times when you are doing a system with a DSP along with 2-3 other amplifiers you tend to be more cautious of the real estate you are using inside the car. There’s only so many places in a car that you can shove an amplifier or DSP.

  3. Spot on. And it’s only getting more and more of a challenge finding suitable locations for the various components.

  4. From what we have been seeing is the utility of the “VXi” line amplifiers make it an easy choice for those with a “newer” model vehicle that makes swapping out the head unit not feasible or practical a really nice choice because with the DSP we can tame the OEM peaks and dips to attain a relatively flat signal to amplify. Now, with folks who have an aftermarket head unit and not really needing the DSP function the “HD” line is the way to go. Like most situations we encounter, JL Audio has a solution.

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