Translating the request/improvement idea: sounds like you want to have equalizations for a variety of HPs and speakers built into your Evo 75.No - I never use it.
I try to ensure my speakers suit the room.
The problem is, I have tons of music, and some tracks need more/less bass and some need more/less treble or other room-relevant adjustments.
So, I go for a happy medium, and listen contentedly rather than fiddle all the time - those people are more interested in listening to the HiFi than listening to the music!
I do however have a support request/ improvent idea out with Cambridge Audio for my modest Mid-Fi Evo 75, which is to allow tone control preferences to be set and "pinned" for each of - headphones or speaker outputs. Not hard to follow what I'm asking for. This is because all headphones I've tried (dozens), except IEMs, are always too bright. I blame Harman - it's just wrong!