Summary: The M16s provide strong, warm audio with good bass, and the noise cancellation is largely effective. Be warned that this benefit is one way, and there was outwards leakage at the upper volumes.
Excerpt: Blackbox , created by Phitek Systems , a company that came out of nowhere with the impressive noise-cancelling i10 in-ears, is back with the M16 on-ears. Oddly, they sound different depending on whether you have noise-cancelling on or off. With it off, they sound distant and a bit cluttered, with treble sticking out a little more than it should. Vocals, meanwhile, are a little recessed.
Pros: Good noise cancelling, Apple remote and mic, smooth, tonally balanced audio, useful accessories
Cons: Sound weak in passive mode, rather cluttered delivery