The original adaptor wires broke at either end where the wires meets the body and the plug in part.
I'm hoping this won't happen with the new one and it's too early to tell yet whether this could happen again.
The plug and correct voltage output was fine BUT the plug is not the correct size for the radio, it is a loose fit and the radio goes on and off. Bluetack did the job and now the radio stays on
There are various power supplies and not all fit the Pure Radio due to different models that have different size DC sockets. This one was correctly described and fits perfectly.