Audio Control Overdrive?
 

Anybody have any experience with the product?

I'm running a pair of sub amps and my deck (an old alpine 9803) has 2V Max Sub Pre-Out. When setting gains, i was having issues with AC voltage so i figured i'd try out a decent line driver. Even with the gains on full i'm not getting the voltage i should be.

Picked up a line driver and fixed a couple bad connections, it's all good.