how to amplify??

[mcgusto82]

do you guys know of a good way to amplify rca outs before going into the a radios' "aux"?resoan i'm asking is because since i installed a homemade hands free. i've been using the aux on my HU. But the volume is somewaht low. i have to put the volume almost at the top level to hear well.now, that's not the problem. the problem comes when i switch back to "tuner" or "cd". i forget that i have it soo high after a few minutes of convo. then the radio is blasting as soon as i switch back. it's happened a couple of times and today i scared the crap out my grandmother in the back seat. lolso now, i want to be able to listen without having to place the volume so high.and yes, i've already raised the volume on my cell phone.

[Jahntassa]

Find a line driver, I think mine cost about $18 or so..

[mcgusto82]

could you be a little more specific, please?