Cheap noise filtering from Creative headphones

The manufacturer of well-known PC sound generators was striving for a more favorable price tag than Bose, for $ 99 we get 85% noise reduction.

Creative Technology Ltd announced its "well-priced" noise-cancelling headphones, the HN-900, yesterday. In addition to the extremely useful street function, the accessory has another important feature, as a microphone and a control button are placed on its cable, so iPhone owners can answer calls with one move. The energy needed to dampen unwanted external sounds is taken from the headset by an AAA battery, which provides enough trouble-free music listening for 40 hours. According to the factory data, the 40 millimeter neodynium membranes work in a frequency range of 20 - 20 kHz, but we would doubt this. The 168-gram HN-900 has an impedance of 290 Ohms, while its sensitivity is 100 db/mW at 1 kHz. At the end of the one-and-a-half-meter cable, we find a gold-plated jack connector, and we can already get it at the mentioned price of $99.