I have an Xtrons DD unit with built in dab+.It was supplied and fitted by Jubbarelly, member on here.
As mentioned above by GF, a good qualty amplified external aerial is vital to good performance of the radio. I found that the windscreen ones are hit and miss,particularly in rural locations, at night and when other electrical systems on the car in use. Jubs fitted a shark fin for me that I supplied. The scan found 96 dab stations and reception is near perfect on most of them (4/5 bars) under all conditions.The aerial seems to be the key compinent in consistantly good reception.
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