Fiio JD10 VS ND Planet

Youtube Video Summary

ND Planet is a 12 mm beryllium-plated dynamic driver set that targets a relaxed, bass-boosted balance rather than a true Harman curve. Marketing references to Harman 2017/2019 do not line up with the actual response: there is an early ear-gain rise around ~2 kHz that climbs toward ~10 dB and becomes shouty as volume increases, so the set behaves best at low listening levels. At roughly $17, it is not positioned as a standout, but it clearly aims at a different audience than typical budget Harman clones.

The low end presents a heavy, full bass shelf that sounds reasonable at low volume and grows thick quickly when pushed. Mids are on the thicker/relaxed side with more lower-mid body and less upper-mid energy; compared with KZ's more energetic 3 kHz approach (e.g., Saga Bass), ND Planet feels more centered and less V-shaped, with extension that rolls earlier. Listeners who dislike lean mid-bass and hot upper mids will likely prefer this presentation.

The treble is 2–7 kHz-centric and rolls off in the upper registers, trading air and sparkle for treble safety. That choice keeps fatigue down but flattens perceived brilliance and keeps the soundstage largely inside the head, with limited projection. Overall, ND Planet reads as a preference-tuned, low-volume, bass-forward single-DD that intentionally diverges from Harman 2019 rather than a technical showpiece.