Hi again and many thanks for everyone taking the time to reply, it is very much appreciated. So I listened through my Senns, firstly through the I-Phone SE then a Fiio DAP. I found the I-Phone sounded much better surprisingly!
Firstly I am by no means an experts in aural matters!! The sound was cleaner, the bass came through a lot more and some of the treble hiss i got from the fiio wasn't present on the I-Phone. So I think i'm going to stick with apple music for now, although I did try Audiovana and Tidal. Next thing is which lightning dongle to get????