It's a good IEM but here are some points where it definitely falls behind the SD3 and many others:
- As with the IE800, subbass is too much. IMO it does not extend "better" but it goes gaga with too high levels. This causes fatigue.
- Mids are not only recessed but they also have a presence peak, making some female vocals sound forced and harsh.
- Highs show some sibilance. It's not strong, but it's there!
Finally, the cable design is the worst ever! You definitely need to recable the MH1 if you want to use it extensively.
I do agree with it sounding very organic. Dynamic drivers do have an advantage there.
Thank you for the recommendation, but from my experience it's not similar to SD3 in any way.