When it comes to adding an amplifier or amplifiers to your factory audio system, the link4 does what models from competing brands just can’t. Simply put, it is the most flexible 4-channel LOC available today.

The link4 can directly accept 4-channels of input and give you 4-channels of output. It can accept 2-channels of input and give you 4-channels of output. If you input 4-channels, you can sum them down to 2-channels of output and pass through another 2-channels for retained sub level control. It even has a 3.5mm Auxiliary Input so you can add your phone or other portable device to the system. No other 4-channel LOC can do all of that.

As an added bonus, it includes our “Patent Pending” Multi-Function Remote Level/Source Control that can adjust your subwoofer output level, the volume of the auxiliary source or serve as a Master Volume Control for your entire system. This is especially useful in OEM systems where speed sensitive volume dependent equalization is present.

link4 Features

4-Channel Line Output Converter

4-Channel Summing Processor (4-in/4-Out)

Multi-Function Remote Level/Source Control

Master Volume Control

AUX Volume Control

Independent CH3/4 Level

Source/Function Select

AUX 3.5mm Input

2ch or 4ch Input Select (Direct, Copy or Sum)

2-Way Summing w/Retained Sub Level Control

Differential Balanced Inputs

Low Impedance Outputs

Variable Gain Adjustments w/Clip LEDs

Auto Turn-On via DC-Offset or Audio Signal Detect

Generated +12V Remote Output

OEM Load Detect Compatible

Locking Detachable Power/Speaker Input Terminals

Professional Grade Panel Mount RCA’s

Compact Aluminum Chassis w/Detachable Mounting tabs

link4 Specifications

Output Voltage (Max) ———— >10Vrms

Output Impedance —————– <50Ω Input Sensitivity SPK ----------------------------- 2-20Vrms, 4-40Vrms AUX ----------------------------- 0.5-5Vrms Max Input Voltage (SPK) --------- 40Vrms Frequency Response -------------- <10Hz to >100kHz

THD+N (SPK/AUX) —————— <0.05% /<0.05% S/N (SPK/AUX) ----------------------- >114dBA />115dBA

Turn-On Trigger ——————– +12V, DC-offset & Audio Detect

Generated +12V Output ——— >500mA

Chassis Dimensions —————- 1.1”x3.5”x5.2” (29x90x133mm)