If your performance car audio system is designed for maximum sound quality and maximum control, then the FOUR.1i is the car audio processor for you. Designed to be the world’s first professional quality in-dash equalizer, the FOUR.1i boasts such features as 13 volt signal capabilities, a master volume control, and auxiliary inputs for secondary sources. In addition, five equalization controls give just the right amount of control for the user. AudioControl’s line of in-dash car processors offer features and functions that allow you to adjust and tweak your performance car audio system from the convenience of the driver seat. Included are features like equalization, electronic crossovers, master volume control, and high voltage line drivers.

Features: 

• Stereo graphic equalization
• Para-BASS® low frequency controls
• Pre-amp gain of 20dB
• Line driver: 13 volts peak output
• Balanced differential inputs and outputs
• High-headroom PWM switching power supply
• Main and auxiliary switchable inputs
• Switchable back-lighting color (blue/red)
• Master volume and fader control
• Selectable ground isolation
• Optimum voltage LED

Specifications:  

Inputs

• Preamp Inputs: 1 (2 channels)
• Input Gain: 0-20dB
• Aux Input: 1 (2 channels)
• Input Impedance: 20kΩ

Outputs

• Preamp Outputs: 2 (4 channels)
• Maximum Output Level: 9.5Vrms
• Output Impedance: 150Ω

Performance

• Total Harmonic Distortion: 0.01%
• Frequency Response: 20Hz-20kHz
• Signal to Noise: 110dB
• Equalizer Frequencies: 40Hz-80 Hz (parametric), 125Hz, 500Hz, 2kHz, 8kHz
• Equalization Cut/Boost: ±12dB

Control

• Remote In

General

• Power Supply: High Headroom PWM Switching
• Current Draw: 250mA
• Recommended Fuse Rating: 1A

Weights & Dimensions

• Dimensions: 6.75”W x 5”D x 1”H
• Weight: 2.0lbs (0.9kg)

What's in the Box: