The dynamic driver hits the bass better than BAs. I just does. I have Moondrop S8 and yeah all the sounds/music is "smoother" and easy to listen to to. I however have never had these IEMs sound harsh or make me want to take a break. They hit sharply where the S8s don't and it is pleasurable in that it doesn't hold back. The S8s have a place definitely but technically and transparency of these Monarch IEMs is the best I have heard and I appreciate them so much. They are TOTL for me, your milage may vary. S8s are definitely TOTL for some folks too - bass is too important to me for them to be that for me. I recommend the 100 ohm inline filter for these like crinacle recommends - it actually is audibly made a difference to me surprisingly.
The 2 pin issue - isn't new, other options are available and I am hopeful for the new solutions. I am content with the 2 pin thing slipping out. If that is my only issue, it is a non-issue. The other issue was kind of an issue which I am requesting it be fixed. The metal part where the ear tips and wax filters connect actually came off of one. The customer service has been great - just waiting to get these back repaired. Photo of issue attached just for reference.
Oddly enough while both these things seem like they are red flags - I 100% recommend these IEMs. That are like going from going from out of the box iems to blon 3s as far as a surprise factor. They are orders of magnitude beyond that - Amazing, just amazing. I am not even caffeinated this morning so this is pretty low key excitement about something I genuinely feel comfortable recommending to other folks.
The 100 Ohm resisters that were mentioned are worth it. If nothing else they immediately remove a noise floor from any amp - which in itself is significant. The bass boost was noticeable for me, but YMMV. I prefer balanced 2.5 mm, honestly you won't notice a difference in 3.5 aux resisters and are still worth it. The only place I found these sold in an professionally made sort of way is penon audio. I get no kick back for endorsing these - they are solid though. About 15-16 USD.
My Benchmade EDC pocketknife in the photo - can also recommend. I is 551-S30V Griptilian just as a reference.
Hope this helps. Take care of yourselves and take care of others if you can.