Spandy87
100+ Head-Fier
I have a pair of Hifiman HE-400i. Can somebody elaborate on what am I missing without the AFO?
AFO is in a totally different class. I've used both, and you're missing out on the overall rich, full, impactful aspects, if not some of the resolution and detail as well. These two couldn't possibly be more different imo. That said the 400i is still a great sounding headphone, but you can't expect it to compete with the AFO. I would recommend trying them out at a store if you get the chance but your wallet might feel the pinch if you do haha. That definitely happened to me even when I heard the first AFC. Basically it's like the difference between a HE-400i and a HE-500.