You can always check my M2s video in my YouTube channel, bro. I line it up against a few competitive DAPs for comparison. Link's in my signature.
I've used it just like this with Mojo
Regarding
@Francisk's question...
N3 has a fuller sound than M2s for sure. That's not surprising given their respective house sounds. All the Cayin DAPs except their TOTL N6 dap sound full to me. On the flip side, the only really full sounding Shanling dap is their TOTL MY dap. Different philosophies
Personally, I don't find N3 highs grainy, peaky, or harsh.
I do have the sensitivity when it comes to cans, so if it's there is not in my sensitivity range.