Lobarkaine
100+ Head-Fier
I was hoping the HM Pro was an HM with fast detailed punching deeper subbass and midbass to give a more full body mids, but same defined and revealing high mids and trebbles of the original HM....Well the original Heart Mirror (non pro) was very unique as it was one of the rare neutralish IEMs at the budget segment. Most of the similar priced competitors are V shaped or Harmanish.
In fact, it is kind of a misnomer to call this Heart Mirror Pro a "Pro" version of the original Heart Mirror, since tonally they are very different.
So the new Heart Mirror Pro is quite harmanish, and is very similar in tonality to other sub $100 single DDs like the Aria 2021, Tin T3 Plus etc. They all appear to be sidegrades of each other, not much value-add TBH.
Harman tuning is a safe option for manufacturers, since most people will prefer it tonally, so I get where they are coming from. They probably don't want to take too much risks with an extreme tuning, but if majority of budget IEMs use a Harman variant, then how do you stand out from the competition? (Well you can get a one-up over the rivals by sporting some anime waifu babe packaging or claiming some uranium driver).
About the uranium DD drivers they works better paired with cryptonite BA, big impact and full estension, the anime waifu girls works better directly printed on the shell or in...silicon form with a sub woofer...