What's interesting is they told me the same thing. I read on this forum to buy the VW plug and switch the power wires and it gets better -- so I go to the local Best Buys to get the connector and the install tech tell me it will not work with the stock infinity amp. I buy the connector anyways to give it a try. Took about 30 minutes to install the new head unit and it works great. I took it back to show the Best buy tech and he just scratch his head and said they told us it would not work. That's why I love this forum, you learn a lot of good information and mods.