Instruct: Classify the given review as either positive or negative.
Query: Don't buy if you have AVH-4000

I bought this to use with my Pioneer AVH-4000 and it sucks. Only about 10% of the buttons are even used. The remote is HUGE and wierd. It cannot adjust any of the audio functions, it cannot hit menu/back button, I still have to touch the screen just as much as I used to without the remote. Its only $15, but I regret buying it.