I bought myself a Shiit Magni 3+ headphone amp for Christmas and it’s one of the best tech purchase I’ve ever made. They’re pretty inexpensive for audio gear ($99 plus shipping) and my trusty ATH-MX50x almost sound like a new pair of headphones. In my experience classic rock benefits the most from the combination: I can hear details in The White Album or Heroes that I haven’t heard before. Four out of four eardrums from this guy.
It's the little things.