My fear that they have a bass heavy profile was based on measurements posted earlier in this thread and a review where the reviewer advised EQ. But this can be completely a non-issue if Sennhesier could just make it easy to switch the profile. The "high end sound tuning" button for the Momentum 3 allowed rtings.com to score it highest for "neutral sound" amongst all the ANC headphones of its generation, despite it certainly not being neutral out of the box.
A simple one-click button makes it convenient and hassle-free for classical and jazz music listeners to get the profile they want without messing around testing EQ settings and worrying if the EQ has enough bands. It also allows reviewers like rtings.com to say "yes they are neutral if you set this option". Please feed this back to Sennhesier if you can