Luis, how are you getting LOD out from a 5G? Do you have the lightning-to-30pin connector/cable in between?
I'm not crazy after all! I was saying i don't like my ipod touch 5g vs. the other ipods. Just look at these:
The ipod touch has less high treble. Maybe this is the only reason it sounds different, but I would say it is EXACTLY the difference I hear. A loss of the very very high crispness to a very small degree. I know from testing I can hear a .5db difference, and I know i'm not hearing this because I'm consciously aware of it. It has bugged me since before I knew it. In fact I thought the response graphs were flatter. It irritated me enough that I started only using the touch with my LOD and C5 amp, which sounds perfect.
Anyway, just saying for anyone super critical out there and considering a new touch. The graph doesn't show it being a huge difference, and the difference might not only be frequency response, but for someone very discerning there are definitely times that the touch is noticeably less "micro" detailed.