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JL Audio VX1000/5i

5-channel car amplifier with digital signal processing — 75 watts RMS x 4 at 4 ohms + 600 watts RMS x 1 at 2 ohms

Item # 13698632

We heard a lot of pre-launch buzzing about JL Audio's VXi Series amplifiers, which combine JL Audio's latest...

We heard a lot of pre-launch buzzing about JL Audio's VXi Series amplifiers, which combine JL Audio's latest...

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About the JL Audio VX1000/5i

Amplifier plus DSP

We heard a lot of pre-launch buzzing about JL Audio's VXi Series amplifiers, which combine JL Audio's latest amplifier technology with powerful signal processing. JL Audio teamed up with micro-device maker AKM™ to create this customized processor-amp hybrid. They also improved the amp's Class D performance by shortening the signal path through the amp, placing the output capacitor banks nearer the outputs, and using up-to-date DirectFET® MOSFET output devices, resulting in higher efficiency, reliability, and audio quality.

Amplifier plus DSP

We heard a lot of pre-launch buzzing about JL Audio's VXi Series amplifiers, which combine JL Audio's latest amplifier technology with powerful signal processing. JL Audio teamed up with micro-device maker AKM™ to create this customized processor-amp hybrid. They also improved the amp's Class D performance by shortening the signal path through the amp, placing the output capacitor banks nearer the outputs, and using up-to-date DirectFET® MOSFET output devices, resulting in higher efficiency, reliability, and audio quality.

Power and tune your whole system

The VX1000/5i 5-channel amplifier puts out 4 channels of 75 watts RMS, plus up to 600 watts RMS for a sub. It also features 7 channels of digital signal processing, giving you lots of flexibility in setting up a system. For instance, you can power a system with 2-way component speakers (tweeter and midrange woofer) up front and a sub in the rear, while providing a processed signal for a separate amplifier for  rear speakers. You could also use this amplifier in bridged, 3-channel mode to power a couple high-performance speakers with 200 watts RMS each and a sub with 600 watts.

Digital accuracy

The 24-bit 96 kHz processing for each channel includes signal routing and mixing, 10-band parametric EQ, time-alignment, high- and low-pass filters, and output level control with 0.1 dB precision. In addition to tuning the audio signal, the processor provides a master clock signal for the Class D amplification, increasing audio accuracy.

Remote control only

You make all your settings and adjustments from your compatible device running JL Audio's TüN™ software.

  • PC and Mac OS: TüN 3.0 — requires a USB connection (6' cable included with amp)
  • Android and iOS tablets: TüN Mobile — requires Bluetooth connection and the VXi-BTC Bluetooth communicator (sold separately)
  • Android phones and Apple iPhones: TüN Express (for Basic setups only) — requires Bluetooth connection and the VXi-BTC Bluetooth communicator (sold separately)

Other accessories you may want with this amp

This VXi amplifier features JLid™ inter-device connection ports for JL Audio's proprietary network system for controlling data. The DRC-205 digital remote control lets you adjust the master volume, subwoofer level, switch between up to six preset tunings, and indicates the amp's status via LED. An optional VXi-HUB network hub comes in handy when you have three or more VXi amps in your system, coordinating all the adjustments and controls. A FiX 82 or a FiX 86 can be used to remove factory sound processing, for higher-fidelity factory system integration for your VXi amplifier.

JL Audio VX1000/5i

VX1000/5i connection panel


Product highlights:

  • 5-channel car amplifier
  • 75 watts RMS x 4 + 400 watts RMS x 1 (at 4 ohms)
  • 100 watts RMS x 4 + 600 watts RMS x 1 (at 2 ohms)
  • 200 watts RMS x 2 bridged at 4 ohms + 600 watts RMS x 1 at 2 ohms
  • Class D amplifier design with NexD2™ switching amp technology
Digital Signal Processing:
  • 24-bit 96 kHz digital processing
  • DSP adjustments and settings made with JL Audio's TüN app (PC and Mac) via USB, via Bluetooth (tablets and phones) with BTC Bluetooth option
  • 3 Project Levels of tuning: Basic, Advanced, Expert
  • input routing and mixing
  • adjustable gain controls with clip indication
  • fully adjustable high-pass, low-pass, and bandpass filters
    • selectable filter slopes (6, 12, 18, 24, 30, 36, 42, 48 dB/octave)
  • 10-band EQ (graphic in Basic, parametric in Advanced and Expert modes)
  • phase and polarity control
  • time alignment in 0.01 ms (1/8") increments
Connection Features
  • differential-balanced inputs eliminate noise coming from your vehicle's electrical system
  • preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input)
    • high-level inputs — up to 16 volts RMS (about 60 watts)
    • DC offset or signal sensing auto turn-on eliminates need for remote lead
  • 2-channel digital input and output (S/PDIF: up to 24-bit 192 kHz in, 24-bit 96 kHz out)
  • 2-channel analog preamp output (4V RMS)
  • JLid™ connections for optional Network Hub, Bluetooth Communicator, and Digital Remote Control
  • USB connection for device running TüN app (6-foot cable included)
  • wiring, fuse, and hardware not included with amplifier
    • 4-gauge power and ground leads and an 80-amp fuse recommended
  • 11-5/16"W x 2-1/8"H x 6-11/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # 98632

What's in the box:

  • 5-Channel amplifier
  • Power connector
  • 14" Analog Input harness (25-pin D-Sub/8 RCA)
  • 18" ABCD Speaker output harness
  • Subwoofer output connector
  • 18" Speaker wire loom
  • "Sub" wire label
  • 6' USB cable (Type A USB on one end and Type B USB on other end)
  • 4 Corner caps
  • Corner cap tool
  • 2 Silver thumbscrews
  • 2 Black hex cap machine screws
  • 2.5mm Hex wrench
  • 3mm Hex wrench
  • JL Audio logo badge
  • Connection Guide
  • Registration card

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JL Audio VX1000/5i reviews

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JL Audio VX1000/5i

Crutchfield customer from Cleveland,OH on 8/10/2019

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Fantastic sound quality Can power standard 4 channel & sub or active 2channel & sub with infinite xover points & slopes for all. TuN app required to setup properly Bluetooth dongle allows use of phone or tablet Laptops are usually wired & allow most advanced settings & disconnected after settings complete. TuN can store multiple system setup profiles available at your fingertips with Bluetooth. You can have your profile for late-night driving, audiophile sound, or kick ass Boom. With the built-in equalizers crossover points & slopes, Made my factory car speakers sound like a $600 pr speakers. (W6 helps) I know sound! My home speakers were $12,000pr when I first released. Five Stars Aren't Enough

Pros: With Control of all of the different parameters of your car speakers sound, you can make your existing car system sound better. I have ordered car speakers but the VX1000/5i is making me reconsider whether I really need them or not !

Cons: Be Prepared to spend some time learning how to use the TuN app there is a tutorial onLine that is very explanatory and easy to follow. With patience you will be rewarded with great sound sound

Crutchfield response on

1 of 1 found this helpful

One of the best amps for the money

Douglas from Baltimore, MD on 1/4/2019

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Verified employee purchase (What's this?)

I had this amp in my truck since it was released. I have it powering my focal k2 in the front and focal flaxs in the rear with my Jl stealthbox. I came from the jl hd900/5 which sounded awesome. The sound is so much better coming from this amp. The infinite adjustments you can make with this amp makes it an audiophile dream. Also with the bluetooth dongle you can make adjustment with your iPad and or smartphone. I prefer using the iPad because you have more control over the functions of the amp. Also the knob is another great feature if this amp.

Pros: The infinite adjustment Built in DSP Toslink input

Cons: None

Crutchfield response on

7 of 7 found this helpful

Super configurable, clean looking, clean sounding, Toslink!

Keith from Powell, OH on 11/13/2018

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Verified employee purchase (What's this?)

What a fantastic piece.I am running Focals in my doors and a JL13T5 in the back. This thing handles all of it with no problem. I love that it has Toslink in/out as well which really cleans up the install. The Tun software is super simple to use and is endlessly configurable. No real complaints about it other than I wish it had built in blue tooth so I can use the mobile Tun software. I have to buy another piece to activate that.

Pros: Great sound/look/power/support.

Cons: none

Crutchfield response on
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4 of 4 found this helpful

Great amp not an easy setup but worth the cost

Michael from Bremerton, WA on 6/6/2018

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Verified employee purchase (What's this?)

So let me start by saying the amp itself in fantastic. I have and replaced a HD900 JL Audio for this. My issue is I asked several questions regarding this from tech support. My question were I have the fix 86 and the HD900 in my 2016 F150 Limited with the not so great Sony system. My fix is a year old and the TUN software was not included and the adjustments that can me made with your laptop are great like on this new version. The issues was you could power the door speakers using a splitter into rca as this amp has no direct way to wire in speakers. So I purchased three of those and only the doors worked apparently to power the sub you needed a converter or sound processor like I already had and wanted to eliminate with this amp. So I tried a LC7I Audio control still not what it was capable of. So in the end I reinstalled Fix 86 and it is truly amazing with all of the adjustments tuning etc and the bass out of my JL Audio stealthbox is way cleaner and much more bass the HD900 not sure why but it is. So long drawn out review is for my application I was unable to just have the VX1000/5I run my system as I was told I could. The TUN software unfortunately the tech support guys just haven't had their hands on it enough but were a great help trying to figure it out with me. Not for the timid but it will amaze you every time you turn it on. I have Focal 6 1/2 ES165 KX2 up front and EC165K in the rear and the JL Audio Stealthbox they say doesn't fit but JL sites does.

Pros: tons of adjustments and small footprint and expandability and great power

Cons: No support from Jl Audio on their own software required to make the amp even work and the cost but when you want the best it will cost you

Crutchfield response on

11 of 17 found this helpful

Amazing product

Crutchfield customer from Wheat Ridge, CO on 4/15/2018

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Verified employee purchase (What's this?)

This thing is pretty great. It's not a do it yourself install though. It has to plugged into a computer with the right program before it will turn on for the first time. The dsp is pretty good but have it programmed by a professional. It will save settings so if you want a few different sound stage settings you can get a three function bass knob to control the settings. It's powerful and super clean. Of course I'm running Focals and a 10" JL W3. I was the first to bring this in to car toys and they kept the car for two and half days to figure out all the features. It's super small and will literally fit anywhere. Great product JL. Spendy bit worth it. Crutchfield is also the easiest company to to buy from and very tech supportive.

Pros: Awesome versatility and function

Cons: Pricey but you get what you pay for

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10 of 11 found this helpful

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Product Research

Digital Signal Processing


VXi Amplifiers: The JL Audio VXi-series of amplifiers feature advanced technology with built-in digital signal processors. These compact amplifiers pack a lot of power into a small package. Each VXi amplifier is equipped with a customized, triple-core AKM DSP that allows you to tune the amplifier to the exact performance you need. With JL Audio's free TüN software on your computer, tablet, or smartphone, you can configure the amplifier from the driver's seat. Up to six active preset tunings can be stored.

5-channel Amplifier: The VX1000/5i 4-channel Class D amplifier that has been optimized for full-range amplification of connected speakers, while also powering a subwoofer. It has advanced NexD2 switching amplifier technology to deliver solid performance with high fidelity and efficiency. The amp does not have traditional control knobs and switches for setting up the amplifier. Instead, the input sensitivity, crossover, and polarity settings are configured via the TüN software.

Logo Badge: The included JL Audio logo badge is included in the box, unattached. The badge has an adhesive backing for attaching it according to your installation in any 90° increment. The color of the LED ring around the logo badge can be configured in the TüN software to display the amp's status, audio preset, or a user-defined color.

Digital Signal Processing

AKM DSP: JL Audio's AKM Digital Signal Processing engine, when partnered with the TüN software, gives you an enormous amount of control over the configuration and settings of the amplifier. It is equipped with high-performance AKM A/D and D/A converters, and audio processing for high-resolution 24-bit/96kHz audio files. For some VXi models, the DSP offers a 10-band parametric EQ for each output channel, including pre-outs, Linkwitz-Riley and Butterworth high-pass and low-pass filters, Signal Delay (0.01 millisecond steps), polarity reversal, and output trim levels (in 0.1dB steps).

TüN Software: The free TüN software lets you configure, tune, and control your VXi amplifier from your PC, tablet, or smartphone. The TüN software is available for Windows PC (Windows 7 SP1, 8.1, and 10 / 32-bit or 64-bit) and Apple computers. TüN Mobile is available for iPad and Android tablets, while TüN Express works with iPhone and Android smartphones. The apps are compatible with iOS version 10.0 or later, and Android 4.4 and up. When connected to the VX1000/5i, you can make the following adjustments and settings on the application:

  • Input Selection: Analog or Digital
  • Turn-on Mode: Remote, DC offset, Signal Sense
  • Input Mode: 2 Ch / 4 Ch / 6 Ch
  • Independent Settings for CH 1&2 and CH 3&4:
    • Input Type: Stereo or Mono
    • High Pass Filter: Off, 12dB, or 24dB; Cutoff frequency: 20Hz (or LPF frequency) to 20,000Hz
    • Low-pass Filter: Off, 12dB, or 24dB; Cutoff frequency: 20Hz to 20,000Hz (or HPF frequency)
    • Level Setting:
      • Input Level: Min to 11
      • Output Trim: -18.0dB to +12.0dB
    • Mute All: On/Off
  • Independent Settings for Sub Channel:
    • Polarity: + or -
    • Infrasonic Filter: Off or 30 Hz
    • Low-pass Filter: Off, 12dB, or 24dB; Cutoff frequency: 20Hz (or Infrasonic frequency) to 500Hz
    • Level Setting:
      • Input Level: Min to 11
      • Output Trim: -18.0dB to +12.0dB
    • Mute All: On/Off

Power Output: The VX1000/5i power specifications are as follows:

  Ohms Watts
Rated Continuous Power @ 14.4V
(<1% THD+N)
75 x 4
100 x 4
4Ω bridged 200 x 2
Sub 400 x 1
500 x 1
600 x 1
Rated Continuous Power @ 12.5V
(<1% THD+N)
60 x 4
90 x 4
4Ω bridged 180 x 2
Sub 360 x 1
480 x 1
600 x 1


Power/Ground/Turn-On Terminals: The VX1000/5i features a removable plug with C-Clamp terminals for the power, ground, and remote turn-on cables. This allows you to pre-connect the wires to the connector, then plug it into the amplifier. The power connector will accept up to 4-gauge power and ground wire, and 10-18-gauge wire for the remote turn-on. The supplied 3mm and 2.5mm hex wrenches are for tightening/loosening the C-Clamps.

Note: The amplifier is not equipped with a fuse. An external 80-amp AFS, AGU, or MAXI fuse (not included) must be installed on the power wire. If a wiring kit is used which includes a fuse with a value other than 80-amps, the original should be replaced with an 80-amp fuse.

Speaker Output Harness: The JL Audio VX1000/5i features a removable ABCD Speaker Output Harness with 18" wires, plus a removable Subwoofer Output connector with set-screw terminals. The connector's two set-screw terminals will accept 14-gauge to 10-gauge speaker wire. A 2.5mm hex-wrench is supplied for tightening/loosening the set-screws. The included 18" length of flexible loom is to cover the subwoofer speaker wire at its connection with the amp. The loom matches the look of the Speaker Output Harness, and makes for a clean, uniform look.

Analog Input Harness: The amplifier has a 25-pin D-Sub connection for the supplied 14" Analog Input harness. Four loom-covered cables exit the cable's D-Sub connector, with three pairs of stereo female RCA inputs, stereo female RCA preamp outputs (4V max output), the remote turn-on output (+12V) and Valet Preset Toggle lead.

Digital Inputs/Outputs: The amp has optical digital (Toslink) inputs for direct connection of S/PDIF digital sources, bypassing the A/D converter. The input accepts up to 24-bit/192kHz signals. There is also a Toslink optical digital output for sending a digital signal (24-bit/96kHz) to another VXi amplifier.

USB: A Type B USB port is provided for connecting the amp to your computer for interfacing with the TüN software. A 6' Type A to USB-B cable is provided.

RJ-45: Two RJ-45 modular ports are provided on the amplifier for optional accessories:

  • JLid-COMM: One RJ-45 port, labeled JLid-COMM, is for the optional VXi-BTC Bluetooth Communicator (for wireless communication with Apple or Android smartphones and tablets), or the optional VXi-HUB Optical Network Hub (for connecting up to five slave VXi amplifiers -- ten with two VXi-HUBs, allowing synchronization of controllers and DSP presets).
  • JLid-CTRL: The other RJ-45 port, labeled JLid-CTRL, is for the optional Digital Remote Controller (DRC) connection. The optional DRC-205 digital remote control allows you to conveniently set amplifier levels and DSP presets from the front of the vehicle.

microSD: A microSD port is provided on the front of the amplifier for future expansion.


  • Frequency Response:
    • Main: 12 Hz - 24 kHz (+0, -1dB)
    • Sub: 12 Hz - 1 kHz (+0, -1dB)
  • Input Voltage Range (at RCA inputs): 200mV - 16V RMS
  • Signal-to-Noise Ratio:
    • Analog Inputs (20Hz - 20kHz noise bandwidth):
      • Main: 99dB (rated power); 80dB (1 W)
      • Sub: 99dB (rated power); 72dB (1 W)
    • Digital Inputs (20Hz - 20kHz noise bandwidth):
      • Main: 100dB (rated power); 81dB (1 W)
      • Sub: 99dB (rated power); 73dB (1 W)
  • Damping Factor (Main and Sub): >100dB / 50 Hz @ 4Ω; >50dB / 50 Hz @ 2Ω
  • Standby Current Draw: 2.1 mA
  • Dimensions (WxHxD): 11.302" x 2.085" x 6.667"
  • Weight: 6.45 pounds

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Customer Q&A

Crutchfield asked: Why did you buy this?
I wanted a complete setup I have the HD900 and Fix 86 and it just isn't working the way I would like it to [ MIKE  May 11, 2018 ]

2 questions already asked

Line level inputs, It specs 16V RMS, without using a line-output converter. Anybody using this as a single OEM integration amp?
[ daniel  Nov 21, 2018 ]
1 answer
We don't have a way to track if any of our customers have tried using on various vehicles. I know that a vehicle without an amp would work with it as stock radio's will not output more power than this amp can take in. My Bio:
[ Paul  Nov 26, 2018 ]  Staff

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