Taramp's DS 4000x4 4 Channels 4000 watts RMS Car Audio Amplifier 1 Ohm

INPUT: Inputs of signals to be amplified. Connect these signals to RCA outputs of Head Unit, using good quality shielded cables to avoid noise interference GAIN: It sets the amplifier input sensitivity, which allows an optimal adjustment to the output signals levels of nearly all models of Head Units found in the market. HIGHLEVEL INPUT: Input for high level / low impedance signals (from the speaker output of the head unit), it features function auto turn on by the input signal, compatible with head units with speaker diagnosis (A.S.S. Advanced Speaker Simulation OEM HU) so it eliminates the need of the REMOTE INwire from the power connector when using this input POWER (Power Supply Connector):The connector terminal (+) must be connected to the battery's positive pole with a 50mm² / 1/0 AWG (minimum) wire gauge. The connector terminal (-) must be properly connect to the battery's negative pole with a same wire gauge. The remote terminal must be connected to the Head Unit REMOTE output with a 0.75mm² / 18 AWG wire.