Apologies if this is the wrong place to make this thread as I am completely new. I have this old iPod video 5 enhanced and I've been told that sensitivity matters more than ohms. This iPod outputs 60mw (I think) and I've heard most iPods are rated for 1volt rms. My headphones are rated for 111 db and 30ohms (kz zs10 pro) and I plan on buying better headphones in the future. What is the recommended sensitivity and ohm range for this iPod?