Kufatec Fiscon Bluetooth

We have replaced the wife's VW Polo 1.2 with a Golf GT TDI (140). Hurrah! the chap who owned the car previously has installed some aftermarket rear beepers (terrible) and a Kufatec Fiscon bluetooth system. (quite good) do you have any experience of the Kufatec system? I've downloaded the instructional PDF and its a bit crap to say the least.

I've succeeded in linking my iphone to the car phone so I can make calls, but I'm struggling with the bluetooth music streaming (A2DP). So far, I've managed to link the phone with mono music streaming, but the sound quality is weak.

Is there any way of linking it in stereo and with better sound quality?