Good for you! Nothing “requires” eq, it’s just a powerful tool to make all your wishes come true
LCD-2C has the magic property to be one of the headphones with the lowest distortion on the planet, that makes it perfect to use it with eq if one feels like it, it responds very well. It always sounds very natural and very clean, a real quality product!
If you on the other hand are in search of true fidelity aka “high fidelity” as in “it seems I am at the concert” then the stock tuning of the 2021, as much as it is pleasant, it’s not neutral. It’s very much coloured. In this case you want to try a Harman eq, but the good news is this headphone holds up in a superb way
there’s kinda no headphone in the market that doesn’t need eq to reach the harman target (except dan clark’s stealth and expanse and e3) because it’s very difficult to implement it as a stock tuning, but with eq given a quality headphone such ours one can easily reach it with very much satisfaction.
Of course this makes sense if one is on a quest for true fidelity, at the end of the day what matters is getting pleasure from our music how we like it. In the future I will also try and tweak my eq to a personalized taste, seems like fun and the idea of having a personalized headphone? Pure luxury