Looking For A Good Line Driver (8v Maybe?)

[newls1]

Hello all: Im currently thinking about adding a line driver to my current setup. My panasonic HU has 6channel output (Front,rear,sub) all at 2v though. Was wondering if having a better signal (8v) going to my amps, would be a nice upgrade? If so, I need this to be sub 150$. I was actually looking at a phoenix gold 6channel line driver that is like $88 on ebay last time I looked. What do you think? Thanks