I didn't really know where to put this since it originally related to my search for an iPhone DAC that would allow me to enjoy superior sound with my iPhone and not have a separate gadget for music (I subsequently ended up with a DX90 and love it!). However, I've just noticed that on the Beyerdynamic site the T51i headphones are only 20 euro more expensive than the T50p headphones, the only difference being the Made for Iphone/Pad designation of the T50i. (The ad specifically states "based on the T50p..."). Which got me wondering, how much more expensive is the MFI designation to realise? In principle what we're seeing here is that its 20 euros and no more which begs the question why are some of the DAC manufacturers not going for MFI designations and widening the appeal of their products? Yes I'm aware that some/all of the MFI price could equally be offset in the overall development costs of the headphones as a single entity and the difference applied at point of sale to differentiate apple vs non apple. I'm also aware that Apple can be very selective about who they allow for MFI but it can't all be that can it? Any thoughts?