PAC TURBO 1 Variable Line DriverThe Turbo 1 increases the preamp level being delivered to the amplifiers. Increasing pre-amp level signal helps to better balance your system and allows you to get more juice out of your amplifiers.? S/N ratio of 96 dB for high quality sound.? Average draw is less than 15 milliamps.? The Turbo 1 is adjustable from 0.1 to a 15dB increase.? As many as 10 amps can be driven off one Turbo 1. VARIABLE LINE DRIVER