jl line driver. 8 volts rms output. 2 outputs, 1 input, both rca. 1 variable output controled by a knob. the knob has a 20 foot cable, and boosts and cuts the whole signal, not just bass or 40hz. the other output is fixed at 8 volts rms. small box. simple wiring, great little line driver for boosting your rca signals...
