While NF Acous might not yet be a household name, they’re no strangers to the world of in-ear monitors (IEMs). Since 2014, they’ve carved out a solid reputation, particularly for custom in-ear monitors (CIEMs), being one of the first Chinese brands to offer them. Their lineup today spans everything from professional monitoring to gaming and casual listening.
In this review, we take a closer look at one of their latest offerings in the music listening category: the NF Acous NA20. After spending a few weeks with the unit, here’s what you can expect from this lovely IEM.
Unboxing and Accessories
The NA20 arrives in modest packaging, but it’s neatly presented. Inside, you’ll find a vinyl-style insert and, if you got it early, some bonus stickers from their initial promo.
Accessories are generous:
- A hard-sided carry case
- Multiple sizes of silicone ear tips
- A 6.35mm (1/4-inch) adapter for studio or hi-fi use
- A detachable cable with a straight plug (not the usual L-shape), with the brand name NFACOUS subtly embossed
It’s a straightforward but thoughtful unboxing experience, and one that sets a good tone for what’s to come.
Build Quality and Design
The NA20 sports a translucent brown housing with a unique but understated aesthetic. The glossy, resin-coated faceplates look and feel premium without being flashy. Build quality is solid—it doesn’t feel fragile, and it held up well during daily use both at home and on commutes.
The IEM uses a standard 2-pin connector, with labeled indicators for left and right on both the shell and cable (though the cable labels are a bit hard to see). The included cable is lightweight, resistant to tangling, and easy to manage.
The earphone housing is slightly chunky, but comfort remains decent. Using medium-sized tips, the fit was secure with no discomfort during long sessions.
Comfort and Isolation
Comfort is good, typical of most well-designed IEMs. If you’re used to in-ears, you’ll feel right at home. If not, it might take some adjustment, but the ergonomics are solid overall.
Passive noise isolation is impressive. While it won’t cancel out low-frequency rumble like ANC headphones do, it does a great job attenuating ambient mid-to-high frequency noise. On commutes, it helped block out enough sound to keep listening immersive.
Page 2: Sound Quality & Conclusion






