Discover TüN™ - JL Audio’s DSP tuning software

New Features

TüN™ has been updated to deliver an even more powerful user experience with JL Audio DSP products and is available on more screens than ever.

What is TüN?

TüN™ is software that you use to configure, tune and control your VXi amplifier, and other JL Audio DSP products. TüN™ automatically recognizes what it is connected to, and allows you to make adjustments with a clear interface specifically set up for that product. TüN™ is available for download for free in a variety of applications, for computers and most handheld devices.

Test-Drive Today

You don’t have to connect to JL Audio hardware to check out the new features. Download TüN™ for your device and open in simulation mode to experience its powerful capabilities.

Choose your version below.


Tune for desktop icon and Tune Logo



For Windows® PC or Apple® computers, TüN™ connects via USB and offers complete control and command of the entire VXi feature set from the comfort of your desk or driver’s seat. Software also runs in demo mode, without connected amplifiers, for offline setup or demo purposes.


TüN Desktop Apple App Store Download

Version 3.2 for Windows® PC


Tune tablet icon and Tune mobile logo



Enjoy the full TüN™ software experience on your tablet. Download TüN™ Mobile for iPad and Android tablets. Requires VXi-BTC Bluetooth® communicator.


TüN Mobile Apple App Store Download

TüN Mobile Google Play Store Download


Tune tablet and phone icon with Tune Express logo




Simplified screens for simple and quick amplifier setup. Download TüN™ Express for iPhone, iPad and Android phones & tablets. Requires VXi-BTC Bluetooth® communicator


TüN Express Apple App Store Download

TüN Express Google Play Store Download


TüN Compatible Products

Car Audio Signal Processors

Interface / Correct / Tune A selection of advanced signal processors designed to improve the quality of your audio experience. Analog Signal Processors LoC 22: 2-Channel, Active Line-Output Converter, designed to interface amplified factory audio signals with aftermarket amplifiers. CL-RLC: Remote Level Control and Line Driver works as a master volume control or as a line-level controller for any stereo pair of signals Digital Signal Processors: FiX™: two models of advanced digital OEM integration processors with auto-summing, plus delay and response correction. Designed to interface your factory radio with aftermarket amplifiers and speakers. TwK™: two models of digital tuning processors give you the power to tune up to eight channels of audio with advanced crossover, delay and equalization tools. Why do you need a FiX™?Great audio begins with a flat, full-range stereo signal from its source. Most factory-installed car audio systems are designed with altered audio outputs to compensate for factory speaker quality and placement. In many cases, the only available audio signals are chopped into different frequency ranges, making the integration of quality amplifiers and speakers even tougher. What does FiX™ do?In a nutshell, FiX™ OEM Integration DSPs automatically level match, time-correct, reconstruct and re-equalize factory audio signals, giving you clean, flat, full-range audio signals to build your new audio system around. What about TwK™?Once you have a clean, flat source signal, the TwK™ System Tuning DSPs help take your sound to the next level. Equipped with a powerful, 24-bit digital signal processor, TwK™ processors include flexible input/output options, 80 total bands of equalization, channel delays and powerful mixing tools that allow you to precisely adjust and fine-tune your new audio system. Using the TüN™ Software Interface, connected via PC, tuning adjustments are easily made, for all system types, from basic to complex. Whether you are upgrading a factory audio system or building the system of your dreams, our OEM Integration and System Tuning DSPs are the right tools to achieve world-class sound.

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VXi Car Amplifiers

Reference-grade amplifiers with integrated DSP VXi amplifiers combine JL Audio’s advanced amplifier technology with a powerful digital signal processor, all within a compact and beautiful package that is easy to install and offers unprecedented tuning power and flexibility. At the heart of each VXi amplifier is a triple-core AKM® DSP engine with a custom configuration. This powerful DSP not only enables powerful tuning capabilities, but it also helps to improve amplifier audio performance by acting as a master clock for the full-range audio amplifier sections. Further amplifier performance gains have been achieved via minimum loop area output designs, DirectFET® output devices and closely coupled output capacitor banks. The result is a new level of Class D amplifier performance, with outstanding efficiency, reliable power delivery and world-class audio quality. The triple-core DSP engine has ample power to enable a full suite of powerful signal processing functions. These include powerful input switching, routing and mixing that allow a wide range of sources and configurations. Multiple banks of parametric equalization can be assigned to individual channels or groups of channels. Also included for each amplifier output channel and the analog pre-outs: high pass and low pass filters, delay, all-pass filter, polarity and output level trim. Optical, digital pre-outs feature the ability to EQ and level control the digital stream. Instead of using traditional control knobs and switches, VXi amplifiers are easily configured from the driver’s seat, using JL Audio’s free TüN™ software on a compatible computer, tablet or smartphone. Users can define up to six active preset tunings that can be called up at the push of a button using one of the compatible DRC controllers (sold separately). Download and test-drive all TüN™ software versions in simulation mode for free (no VXi hardware needed). Learn More VXi Product Spotlight

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TüN Help Center Content

TüN adapts to the product you are using it with. Find a list of articles by product to learn more.