AudioControl THREE.2 in-Dash Pre-Amp Equalizer and Line Driver with Dual Auxiliary Inputs
AudioControl THREE.2 in-Dash Pre-Amp Equalizer and Line Driver with Dual Auxiliary Inputs
AudioControl THREE.2 in-Dash Pre-Amp Equalizer and Line Driver with Dual Auxiliary Inputs
AudioControl THREE.2 in-Dash Pre-Amp Equalizer and Line Driver with Dual Auxiliary Inputs

AudioControl THREE.2 in-Dash Pre-Amp Equalizer and Line Driver with Dual Auxiliary Inputs




Are you ready to take your car audio system to the next level? Then look no further than the AudioControl THREE.2 In-Dash Pre-Amp Equalizer and Line Driver with dual auxiliary inputs!

With its advanced features and intuitive design, this powerful equalizer is the perfect for audiophiles who are looking for the best sound. Featuring a 3 band graphic EQ, Para-Bass, and crossover, the THREE.2 allows you to fine-tune your sound to perfection, ensuring that every note and every beat is delivered with unparalleled clarity and depth.

And with dual auxiliary inputs, you can connect all of your favorite audio devices, from  smartphones to amplifiers and subwoofers, giving you the freedom to create a customized sound experience that's tailored to your unique preferences.

But that's not all - the THREE.2 also features an outer ring on each knob that is lit whenever the illumination terminal is energized. This adds a touch of style and flair to your dashboard, making your car audio system stand out from the crowd.

So if you're ready to spice up your ride and take your music to the next level, order the AudioControl THREE.2 today! With its advanced features, rugged design, and sleek styling, it's the ultimate tool for any audiophile who demands the very best from their music.


  • 3 Band Graphic EQ: The rotary knobs adjust the signal +/-12 dB at 125 Hz, 1.25 kHz, and 10 kHz. There's a notch at each knob's center position so it's easy to return to the flat setting.

  • Para-Bass: Para-Bass is a single band, parametric equalizer for the bass output. Like the three graphic EQ bands, the adjustment range is +/-12 dB; the center frequency is continuously variable from 40 Hz to 80 Hz.

  • Crossover: The THREE.2 has built-in high-pass and low-pass crossovers. The high-pass is applied to the front and rear line outputs. The low-pass is applied to the subwoofer output. The crossover slope is 24 dB/octave and the factory crossover point is 90 Hz; the crossover point is governed by a replaceable chip; replacement chips range from 30 Hz to 3,500 Hz. The crossover can also be bypassed if you're not using a subwoofer, sending a full range signal to the front and rear outputs.

  • Line Driver: To achieve the best possible signal to noise ratio and dynamic range, the built-in line driver can increase the head unit's output voltage up to 20 dB (up to 9.5 volts RMS/13 volts peak).

  • Volume: If you choose, you can adjust the system volume using the THREE.2's volume knob. This allows you to leave the source volume at it's maximum un-clipped level, resulting in the best signal to noise ratio and dynamic range output from the source.

  • Subwoofer Level Control: The relative subwoofer volume is adjusted using the rotary Sub Level control on the front panel.

  • Fader: Because there is only one stereo line input and both front and rear line outputs, the front panel fader knob is needed to adjust the relative front and rear volume.

  • Auxiliary Inputs: The THREE.2 has two auxiliary inputs, 3.5mm mini-jacks on the front and rear panels. When a cable is plugged into the front panel input, it overrides the rear panel input. The front panel Source button switches between the auxiliary inputs and the RCA line input.

  • Input Gain: The input gain for the left and right channels is set independently; 0 dB to +20 dB. The +20 dB gain allows you to increase the head unit's line voltage to the top of your amp's input range; up to 9.5 volts RMS/13 volts peak. A yellow Maximized LED starts to flicker as you reach the maximum unclipped voltage.

  • Balanced Input: Using the balanced differential input circuit may cancel noise picked up in the transmission line between the THREE.2 and the source unit.

  • Ground Isolation: The power supply ground is switchable, in case of ground loop noise. The factory position is fully isolated (typically the best choice), but can be changed to Ground or 200Ω.

  • Terminal Blocks: The power/ground/remote/illumination terminal is removable; the wiring is attached to the block, then the block is plugged into the rear panel of the THREE.2.

  • Illumination: The outer ring of each knob is lit whenever the illumination terminal is energized. The color is switchable between blue and red. Wiring the illumination terminal to a dimmer circuit allows you to adjust the brightness.

  • Inputs:

    • RCA main input; rear panel
    • Auxiliary 3.5mm mini-jack; rear panel
    • Auxiliary 3.5mm mini-jack; front panel

  • Outputs:

    • Front outputs; RCA; rear panel
    • Rear outputs; RCA; rear panel
    • Subwoofer outputs; RCA; rear panel

What's In The Box

  • Pre-amp line driver/EQ/crossover
  • 2 Mounting brackets
  • 4 Mounting screws
  • User Guide 


3-band EQ

+/-12 dB at 125, 1,250, and 10,000 Hz


+/-12 dB at 40-80 Hz

Optional Dash Level Control Remote


Frequency Response

33Hz-100kHz; +/-1dB  

Line Driver Output

9.5 volts RMS (13 volts peak)








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Warranty Information

We have a 30-day easy return policy for all purchases. 

We provide a shipping label for defective products upon your return request at absolutely no cost to you. Non-defective products will not receive a shipping label and the consumer will be responsible for all shipping costs.

Stinger Off-Road products are warrantied against defects in materials One (1) Year from purchase date. Stinger Off-Road will, at its discretion, replace any products that exhibit defects in materials and/or workmanship during the warranty period. Assessments of defective parts are performed before replacements are shipped or refunds are released.

Please hold on to your order confirmation! All warranty service requires original sales receipt documentation with Order Number. The warranty only applies to the original purchaser.

Note: Products purchased from unauthorized dealers are not covered under warranty.

Warranty Limitations
Units found to have physical or liquid damage caused by use abuse or improper installation may be void of warranty.