You need to decide for yourself where you come down on equalization
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A large number of Head-Fiers either tactfully ignore or outright disdain the existence of equalizers, often invoking the name of 'audio fidelity'. Instead they cycle through multiple sources, DACs, amps, tubes, cans & possibly cables, looking for that perfect 'synergy' of equipment. They are of course (largely) just EQing through hardware curation. An expensive and time consuming process but for many of us that's the hobby; enjoying the search for the perfect collection of equipment that sounds right to our ear.
A smaller number of people appreciate the benefits of EQ, either because they're coming from the speaker realm where it's usually required or because they never got the "it's a sin" memo. And yet a smaller group embraces audio processing outright, getting into Smyth Realizers and other such phenomena.
I am pretty much in the first group, not out of fidelity concerns but just because I want to experience lots of different equipment without the hassle of EQing every time new gear comes in. I don't have any specific equipment I can recommend. I suggest you search for an 'equalization' thread: There are a few around though they seem to get light use.
And back on topic.