Nope, you would still need an iso harness to connect from iso on the back of the radio to quad lock in the car. You could go for the cheaper ones, but they will probably need some wire splicing or cutting on some of them.
the Kenwood VW-only aftermarket retrofit, or a Zenec. neither are cheap, but they both have built in bluetooth and iirc the Zenec has DAB (or is at least DAB capable)