reseIf the W205 is anything like the W200, you will have full control over the functions of the H701. Not using an Ai-Net deck with H701 controls, then you will need the C701. The cool thing is, is that you can set the H701 to your liking and then disconnect the C701 and the setting will stay. I have the 9861 that will control the H701, but I like to have the C701 reach me in the seats for tuning.