Global Radio has switched Heart Extra and Smooth Extra to DAB+. Both services operate on the D1 National multiplex.
Whilst both stations are now in stereo, a number of listeners will loose access, as many older DAB radios are not compatible with the newer DAB+ format. Heart Extra is using a bit rate of 32 kbps, giving relatively poor audio quality. Smooth Extra is using the slightly higher bit rate of 40 kbps.
This move frees up space on the D1 National multiplex, and will likely fuel rumours of the launch of a new station called Heart Dance.