MacNN has reviewed two sets of noise-cancelling headphones, the AblePlanet NC300 and the Audio-Technica ATH-ANC7b. While already cutting out some ambient sound through over-the-ear designs, the headphones each feature active noise reduction, powered by single AAA batteries. The NC300s are noted as being the cheaper of the options, and more sensitive, as well as more convenient thanks to inline volume control. At the same time, music may actually be hard to hear unless noise cancellation is on, draining the battery.
