Yup I have been using my M0 with a Lucid Labs Cmoy Mint tin amp. It does work to make the M0 bigger for some although it is a little goofy looking and I'm still trying to figure out what might work as a stacking kit due to the touchscreen on the M0. It does help a little with gripping/manipulating the M0 too.
Personally I'm okay with the size, the M0 was to replace my M1 as my ultra portable. Tendency for me to have a bunch of stuff in my pockets made the M0 sizing another reason why I bought it, the fact that it outshines the M1 in audio was a huge plus. 0
Just for reference on a daily basis in my pockets I have;
- 2x phones (sometime 3-4)
- Knife of the day (usually a Butterfly Knife)
- Bullet Space Pen or Kaweco Liliput Fountain pen
- Vape (usually a Juul but sometimes a mini box)
- Wallet
- Handkerchief
- DAP of the day (the Hidizs AP200 was really heavy, lol)