Just bought Alpine 134hd radio for my truck took about a half hour to hook with wiring and installing it in the truck. The quality of from the ken wood to the alpine is a difference in sound and how it's built to. I had bought Polk audios speakers a year ago and the sound with the ken wood was impressive but the alpine makes it feel like your at the concert. And this has a USB ,HD radio and it has artist and song display on it to veRy cool. So any body out there looking to get a car stereo this is the receiver to get for not a lot of money.