ddHiFi Air NYX (BC130B) Review——By Prime audio

BC130B evaluation excerpt:
Kick drums gain body and impact yet are loaded with sweet texture and physicality. Yet definition and clean leading edges remain intact. The Nyx Air OCC works particularly well with brighter IEMs, granting them additional girth, extra depth and less edgy highs. But warmer IEMs also benefit from the added grain, especially in bass guitars and male vocals.
What’s interesting about the BC130B is it tends to affect musical notes but not the air surrounding them. So even if midrange instruments are slightly filled out more, the Air Nyx OCC keeps tight control of decays and trailing harmonics.
Vocals and midrange instruments attain extra fullness without losing their articulation and transparency. Brighter IEMs like the Letshouer S12 sound more even and cohesive, especially at a higher volume. The added warmth eases the treble and upper midrange by bolstering the note body, resulting in a more musical presentation.
But it’s the bass texture that really draws me in. The sub-bass notes in the latter half of Caligula’s Horse’s “Daughter of the Mountain” (starting at 5:51) sound gravelly and visceral. In addition, the kick drums hit with impact and assertiveness. 

From : Prime Audio Review