Premium 2-Channel line output converter and line driver 2-in-1 solution. Removable terminal blocks for all input connections Intelligent signal sensing turn-on circuit. Allows easy addition of aftermarket amplifiers to OEM radios. Input gain adjustments and pre-amp 10V high RCA Output. Enough power to cleanly drive any amplifier. Ultra-low 50m Ohm output / 20k Ohm input impedance. Virtually impervious to noise interference. SMT (Surface Mount Technology) & precision components for noise free operation. Output clipping LEDs. Visual adjustment indicator for maximum output on each channel