Hi everybody, I was looking to buy a decent head unit for my vehicle. Right now I'm running an old school sony explode cdx-l600x (23w rms) with new polk audio db6501 (rms 100w), and on the way I have a jbl GTO75.4 (for future upgrade of rear speakers - 104w rms x4). First I was wondering if anyone knew the preamp voltage of my current HU since I can't really find it anywhere... also I was looking for suggestions for a new head unit, all i really want is aux in on the front (for ipod), and a simple non-flashy display. the reason I'm asking is because I don't know if I should be looking for a higher end 4v-5v preamp output headunit or if a 'cheaper' 2v-2.5v preamp output headunit will work. Please inform me on what effect the preamp voltage will have on my setup. Thanks