Not being a car audio gearhead, I need this simple question answered:

From what I've read in a few places on the net, my '99 Miata Bose head unit requires a 12V line level input in order for the Bose preamp to switch over to the line in. It appears that the the Empeg puts out a line level output of 4V (according to riocar.org), correct? If that's the case, then I need just enough amplification to get the signal up to 12V to make the Bose head unit's preamp happy?

Just double checking my facts.

Also, I'd just like to add that this forum, and the miataforum.com forums, rule. Terrific communities. All of you have been an incredible help.