draining the battery
Hmm...on the face of it, it would seem to be less computation to convert digital radio to sound, since a radio-listening device hasn't got to do any networking stuff - either computation (or firing off wifi signals for that matter). So a well designed dab receiver - at first look - would seem to need to do less work (and hence require less power) to operate than an IP receiver.
Can anyone familiar with the technical details clarify?
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Lastly, one minor DAB advantage is that the tinfoil hat brigade can listen to it w/o requiring tor-like contortions when avoiding letting anyone know their listening preferences :)