I have it in my car, and yes, the amplifier section was disconnected prior to hand over.
One thing that not a lot of people realise about this system, is that it gets you two fully functioning USB ports. One in the forward cubby hole (as usual) but slightly lower profile, and another under the armrest with a small elasticated strap to stick a phone into. You can actually plug a phone into each (for example one android and one Iphone) and you then get the choice on screen as to which phone you want to use for App Connect and can switch between them.
As to the wireless part itself, works as advertised and charges both my Galaxy S20 and my work Iphone XR without issue (though obviously not as fast as my Samsung quick charger pad that I have at home and on my desk at work.
Just a shame that Android Auto and Apple Car Play isn't wireless like it is in the new BMW 1 and 3 series, but it's something I wouldn't' be surprised that the MK8 Golf will have as an option.
r