Looks pretty smooth to me. The measurements show a stronger V-shape than I expected, and I also underestimated the warm tilt. (Might be due to my thin head.)
I do like how the bass and mids are one line and I think that's what makes it well rounded. The elevated highs balance out the warm tilt, just like I assumed in my review.
I'm positively surprised by the sub-bass.
Considering the price, the L1 remains a respectable option in the upper mid-fi, being favorable to many unportable headphones even.