I'm glad my friend told me about this unit. I noticed a very huge difference in sound quality switching from my clarion unit. I didn't know voltage levels made a difference. This unit is 5volts for clear and superior sound. The bass will not distort no matter how hard I try. I'm running this with an alpine m450 amp which is running my 2 kicker 12" in my bandpass box. The only thing I hate is that when you change songs, the knob is sensitive so be careful. I should have gotten the remote with it.
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