I'm intrigued by the subject of audio upsampling and have been reading various articles on this, some would say controversial topic. Firstly let me explain. I have a mish mash of audio equipment in the DAP sense of the word. I have a selection of various dedicated DAP players and also old upcycled mobile phones as overflow storage/media players. I found out recently that apparently android upsamples 44.1khz audio to 48khz. Most audiophiles are totally against this and prefer "Bit perfect". My question on this topic is the following: Why does android upsample to 48khz?.....I sort of get the logic of 48khz working alongside film as apparently it's a compatible sample rate. What I don't get is why this is altered on android?.....Does anyone know why this is and also what, in simple terms the pros and cons are?.....any ideas please ?