Excerpt: These are a pair of noise-canceling headphones from Roland. These headphones cancel all external noise. They do this is with a tiny microphone on the outside of the headphones, which records the sounds that are heard, and then plays them back at a 180 degree angle, which effectively cancels the noise out due to phasing. This really only works with noises that are constant, such as wind, traffic, airplane turbines, and fans/AC.
Excerpt: - How long have you use it? two days - What is the particular feature you like best and least? as the price - the least: the poor recovery of some fquences (snare drum on a particular electronic)
Excerpt: I use it for 2 weeks. It is a headphone .... € 30 from there, for sure it's not a headphone pro .... But he defends well! it is comfortable, isolated as much as foam plugs "ear" (ie, the avoisinnant 15/20db). To hear the click, it will, for a sample, it is necessary to bring the volume to hear it, but without self-ears either (at worst it can get earplugs or cotton and more ... .).