AudioControl Three.2

2-Way Half-DIN Preamp/Equalizer and Subwoofer Crossover

Ships in 10-14 days
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• Graphic Stereo Equalization
• Para-BASS
• Input Selection
• 24dB/Octave Linkwitz Riley Crossover
• Pre-Amp Line Driver
• Master Volume Adjustment
• Subwoofer Level Control
• Fader Control
• Adjustable Illumination

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Product Highlights

• Graphic Stereo Equalization
• Para-BASS
• Input Selection
• 24dB/Octave Linkwitz Riley Crossover
• Pre-Amp Line Driver
• Master Volume Adjustment
• Subwoofer Level Control
• Fader Control
• Adjustable Illumination



Authorized dealer

For over two decades, AudioControl has been designing and manufacturing award-winning auto sound products at our factory located in the rainforests of the Pacific Northwest. During this period, countless sound-off winning contestants have chosen AudioControl products to give them the competitive edge. "Can you really win without AudioControl", was part of an article written commenting on competition winning systems? Nothing sounds better than an awesome recording played back on a kick-butt system. Unfortunately, the acoustics of your vehicle can take away from your system's performance. While AudioControl products do not change the laws of physics (although they act as they do), auto sound enthusiasts have long known that AudioControl products "make a good stereo sound better".

Three.2 - In-dash Equalizer/Crossover with Auxiliary Inputs

If you want great sound and love to "tweak" your system, then you will truly appreciate the AudioControl THREE.2. Affectionately called the "EQ on steroids", the THREE.2 is a high-end pre-amplifier that offers equalization and crossover controls for enhanced sound quality. Multiple audio inputs, both front, and rear allow for maximum connectivity with all of your favorite source units.

While being housed in a compact ½ DIN sized chassis, the THREE.2 is truly a feature-laden processor. The THREE.2 starts with four stereo equalization filters including AudioControl's proprietary Para-BASS controls, which give subwoofers extra kick and detail as needed. It also features a 4 channel, 2-way, 24 dB/octave car audio crossover with a fader. To round out the package the THREE.2 also includes a subwoofer level control, master volume control, and the ability to select the backlighting illumination color between Cool Blue and Hot Red.

Given that many of today's audio enthusiasts like to carry their music with them, the THREE.2 is equipped with dual, 3.5mm auxiliary input jacks located on the front and rear of the chassis. This helps facilitate the permanent installation of cabling or lets a user plugin their portable audio device on the fly. Like all AudioControl auto sound products, the THREE.2 is built in our factory in the Pacific Northwest, USA, and carries full 5-year parts and labor warranty when installed by an authorized dealer.

Graphic Stereo Equalization:

The THREE.2 turns the dashboard of your car into a mini-mixing board, just like that in a recording studio. The THREE.2 has three frequency controls set at 125Hz, 1.25KHz, and 10KHz respectively. The frequencies were selected to provide you with just enough control to make dramatic improvements in any system.


You want bass, we got bass. This specially designed equalizer control lets you adapt the bass response of any system to your listening desire. Given all of the various types of music combined with numerous possible bass response anomalies in every vehicle, single control for bass just doesn't cut it. It's like painting a picture with only one color... BORING!

Input Selection:

The THREE.2 provides a "Main" RCA input on the back panel of the unit. It also provides two choices for an Auxiliary input. One is on the back panel for a permanent Aux-in, and the other is located on the front panel. If you just want to be able to plug an iPod in on occasion, then you can use the front panel 1/8" input. Also, the THREE.2 Aux-ins have been optimized with extra gain to compensate for weak signals from iPods and other MP3 players.

24dB/Octave Linkwitz Riley Crossover:

What is the benefit of fine-tuning your system if you cannot accurately route the proper frequencies to the proper amplifier channels? The programmable audiophile crossover in the THREE.2 is the same crossover in many other award-winning AudioControl components. Know who else gives you a 24dB Linkwitz-Riley in their in-dash EQ? Nobody! This is also a far cry from the wimpy crossovers that find their way into some amplifiers these days.

Pre-Amp Line Driver:

Talk about your ironies. Amplifiers require a high voltage input signal (generally 2 to 5 volts) to operate with maximum dynamic range and the best signal-to-noise ratio. On the other hand, typical source units only produce 1 to 2 volts, if you are lucky. In a system where the source unit is located in the front of the car and the amplifier(s) are located in the rear, the length of the connecting cables can have a negative impact on the strength of the signal. The THREE.2 includes a line driver that takes the weak output voltage of a head unit and increases it 20dB (up to 13 volts peak) and then delivers it downstream to the amplifier inputs.

General Features:

  • Stereo graphic equalization
  • In-dash Pre-Amp controller
  • Dual stereo auxiliary inputs (3.5 mm front and rear)
  • Para-BASS low frequency contouring
  • Two input channels and two, four, or six channels of output
  • Stereo and Para-BASS equalization controls for maximum sound quality
  • Precise 24 dB/octave electronic crossover
  • Subwoofer level control optimizes bass performance
  • Pre-amp line driver (13 volt peak) delivers maximum signals to amplifiers
  • Pre-amp gain of 20dB
  • Master volume control and fader
  • Selectable illumination - Cool Blue or Hot Red LED's
  • Compact 1/2 DIN chassis
  • Weight: 2lbs
  • Dimensions: 1.00" H x 6.75" W x 5.00" D
  • Authorized Internet Dealer
  • 5 Year Manufacturer's Warranty (*when installed by an authorized AudioControl dealer)

Three.2 Specifications

  • Maximum input/output level: 9.5 Vrms/13.5 Vpeak
  • Frequency response: 20Hz - 20,000 Hz; ±1dB
  • Total harmonic distortion: 0.01%
  • Signal to Noise ratio: -110dB
  • Input Impedance: 20 K ohms
  • Output Impedance: 150 Ohms
  • Input gain: 0 - 20dB
  • Equalization Cut/Boost: ±12dB
  • Crossover slope: 24dB/octave Linkwitz Riley
  • Factory crossover setting: 90Hz
  • Power supply: High headroom PWM switching
  • Power draw: 250mA
  • Recommended fuse rating: 1 Amp

Check out the AudioControl Three.2 Owner's Manual

Specifications & Details

Equalizer Specifications
Type of Equalizer
Equalizer Bands
3 band
Equalizer Frequencies
40 - 10,000 Hz
Built-in Bass Reconstruction
Line Driver
Speaker Level Inputs
Total Number of Inputs
Total Number of Outputs
Signal Boost/Cut
12 dB
Max Output Level
Frequency Response
20 - 20,000 Hz
Input Sensitivity
20 - 20,000 volts
Channel Separation
20 dB
THD (Total Harmonic Distortion)
Signal-to-Noise Ratio
-110 dB
Warranty and Return Policy
Parts Warranty Duration
5 years
Labor Warranty Duration
5 years
Warranty Provider

Item Details


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name is y i brought it

I havent hooked it up yet but i bet its gone be a beast

By Floyd on February 18, 2013


found this helpful.

Flexible Pre Amp - Line Driver - XOver

Only requires Front Two Channels for input from the source unit then has Front, Rear and Sub Woofer Left & Right outputs. The Sub Woofer output includes an electric (active 24 dB) crossover at 90 HZ and can be changed out to 30 HZ - 3500 HZ or can by-passed. Line Driver up to 13 v and two 1/8 Aux. plugs, one on the front and one on the back for Ipod or other devices. I use this pre amp along with the Audio Control 6XS for a 4-way active crossover system.

By Raymond on September 2, 2013


found this helpful.

Much control for no much $$$

I recently installed this unit in my Dodge Challenger. I have used many AudioControl products in the past but had never used this particular "in dash" piece. Let me tell you, it gives you a very good command of whatever music you are listening too. The adjustments are very accurate and the master volume control is a great feature. The sub control and gain control are great as well. You will not be disappointed with this EQ. Pair it with the in dash Epicenter and your subs will do more than you ever imagined.

By nohobandit on June 24, 2013


found this helpful.

This unit works very well, I LIKE IT!

Just fired up the new EQ pre amp. got to love this one. worth every dollar.

By Lardoggy on July 13, 2013


found this helpful.

Just what I needed!

The epicenter added too much bass that would distort quickly, turns out this line driver is exactly what I needed. The 13V output is plenty to feed the amps, in fact, I was able to lower the gains and crank this guy up for all the crystal clear bass I could ever want. Worth every penny!

By Anonymous on January 8, 2019 checkmarkIcon Verified purchase


found this helpful.

Great proscesor

Awesome proscesor . It really does what it suppose to do. I hook it up along with Indash epicenter and ohhhhh boyyy... great great great great sound overall

By Jesus on November 19, 2017


found this helpful.

AudioControl Three.2

I reallly recommend this product for any spl competition to boost any amplifier to its peak and I promise that you will not be disappointed.

By Anonymous on May 14, 2018


found this helpful.

Great value

I highly recommend this product. Never been disappointed with any audiocontrol equipment.

By Mac on October 13, 2020 checkmarkIcon Verified purchase


found this helpful.


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• Para-BASS
• Input Selection
• 24dB/Octave Linkwitz Riley Crossover
• Pre-Amp Line Driver
• Master Volume Adjustment
• Subwoofer Level Control
• Fader Control
• Adjustable Illumination



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Price: $325.00

Essential add-ons
NVX XIV23 V-Series: 2-Channel RCA Audio Interconnect Cable

V-Series: 3m (9.84 ft) 2-Channel RCA Audio Interconnect Cable



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