Mak,
I've seen you had for sale latest revision of Professional HU (Rad3 I belive, one with integrated BT&USB), did you try to connect it to the car? Do you know if this HU is any better in compare to RAD2 Professional HU?
Here is what I meant:
RAD3 HU (WITHOUT radiator):
RAD2 HU (WITH radiator):
Currently I have LCI RAD2 and I'm trying to get rid of clicking noise when radio is in 'stand by' mode. I can buy RAD3 for cheap and I'm wondering if is it any better?