M shape is so unpopular because letters are a dumb way of classifying sound signatures, besides “v shape”.
Your EQ is pretty much a v shaped eq, scooping a lot of the mids 500-2khz and emphasizing bass and mid treble, it just doesn’t look like so because you’re looking at a very limited EQ window.
Any IEM that has a similar graph
Where are you looking for graphs?
Just because an item has a graph that resembles a “M” doesn’t mean it’s going to sound similar to your tangzu wan er with that eq.
M shape is so unpopular because letters are a dumb way of classifying sound signatures, besides “v shape”.
Your EQ is pretty much a v shaped eq, scooping a lot of the mids 500-2khz and emphasizing bass and mid treble, it just doesn’t look like so because you’re looking at a very limited EQ window.
Where are you looking for graphs?
Just because an item has a graph that resembles a “M” doesn’t mean it’s going to sound similar to your tangzu wan er with that eq.