DAB V1 uses MP2, not even MP3.
DAB V2 uses AAC+, but since the UK has about the largest investment in old style DAB, it will be a long time coming.
http://www.digitalradiotech.co.uk/ - The truth about DAB
http://www.digitalradiotech.co.uk/da..._bit_rates.htm Bitrates - and remember this is MP2, inferior to MP3, which has also been surpassed by AAC+ and most other more recent codecs
http://www.digitalradiotech.co.uk/ar...xt-3-years.php Or launching (podcast services) from next year