Tecsun PL-330 Absolute beginner!


Hi all
My first post here, and bear in mind I know nothing! To compound that problem I’m an OLD man. Okay, a brand new PL-330 turned up yesterday and I realised that was a lot more complicated than my previous Tivdio V-115. I will probably have a 1001 more questions, but for now just one. When using with headphones for the first time last night I was a bit surprised to find that when I switched the radio off (headphones still on) the sound didn’t immediately stop, but faded away. Is this a feature of this radio or a fault please?
Any help greatly appreciated. 

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