WOW!! Simply put, this thing is incredible! Installed in 2004 Super Crew F150 with standard speakers and was blown away with the clearity and power of this HU! No one can believe that they are stock speakers with no additional amp. The USB port is too good to be true. Just drag your favorite MP3's to the stick and its plug and Go-Jam! The HU has a very clean look and is easy to see during the day and the dimmer works great at night. I use the aux in to run the drop down DVD. With this kind of SOUND, I dout I'll ever use the 3 sets of Gold plated 4v preamp outs. Worth every Cent!!!!!!!!