The main unit came in 2004 Chevy Silverado I bought installed in June 2007. I have no manual for it. I have Pioneer 6700 my old car and thought it would miss its full adjustment of the wave equation, but this device has the same settings, and now that I've just learned, I was impressed that she was the third of the RCA. Historically, Sony has a couple to buy Sony CDX-M7810 for the best price vanilla CD player for the mass market is released, this head unit is ready for competition SPL. like I'm still learning some of its features and preconfigured equalizer settings useless, except for XPLOD one, Whoa I was when I turned on that one. All the songs alive on the installation and I still can not the bass and treble and it is not back to the user as Pioneer Sony CDX-M7810 price. I see the price $ 330 and will never pay that has been included if set, and a series of amplifiers, wiring, too. I'm sure you can find the best prices in the usual places. (Cough cough EBAY), I recommend, but do not pay more than the comparable company Pioneer. Also, know that you buy extra cables / adapters to get to the AUX input or remote control Sony CDX-M7810 sat prices, they can add up.
