4-Channel LOC w/autoBASS, Matrix Summing and Remote When it comes to adding an amplifier or amplifiers to the factory audio system in a modern vehicle, the link4+ does what models from competing brands just can’t. It is compatible with Start-Stop systems, meaning you won’t lose sound at a red light. It also has our best in class adaptive loading, so it works with virtually any OEM system. The link4+ is very flexibly. It 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 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 Matrix 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) Start-Stop Vehicle Compatible Matrix Summing with +/-6dB Level Trim Adaptive OEM Load Technology 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 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)