In this video, I review the NF Acous NM20 (their first IEM under the NF Acous rebrand) and answer the big question: can this $120 single dynamic driver set live up to the legacy NF Audio built with classics like the NM2 line. I go through the unboxing, inclusions, and the actual ergonomics—because comfort is a huge part of the “musician series” identity here. The shell is lightweight, sits insanely well in my ears, and it’s the kind of fit I’d trust even if you’re moving around on stage. The case is finally usable (no more tiny puck situation), and the included MS42 tips are a solid match for brighter sets. Sound-wise, the NM20 is hot and raw—this is unapologetically a treblehead IEM. The treble is the main event: energetic, sparkly, and honestly “magical” on the right music, but also borderline sibilant if you push it or pick the wrong genre. I couldn’t make it work for everything, but instrumentals, orchestras, and warmer/thicker vocals can sound crazy engaging. What really saves (and elevates) the NM20 is its technical ability and how insanely well the driver responds to EQ for the price—one of the best EQ responders I’ve heard under $150. My score: 4.85/10 overall, 4/10 enjoyment—specialized, not safe, and absolutely not for everyone.