I agree with JPNinPA, Crutchfield is a great resource for car audio. You can check HU compatibility on their site. They also have an 800 # to call if you are having difficulties. I was having trouble with the Bluetooth sinking and with changing the settings on the HU to accommodate the sub and monoblock. Crutchfield rep talked me thru the setup step by step over the phone in simple and understandable terms.