Sensgard ZEM headphones ready to rock and roll

Sensgard has introduced its ZEM headphones which comes with a simple amplifier that is said to reproduce purer sound and cancel background noise as well, thanks to a proprietary technique courtesy of acoustic researcher Dr. Jozef Zwislocki. The noise cancellation does not require any power since it is non-electronic, and will instead rely on a physics-based sound filter which reduces noise in low- and high-frequency ranges, capable of hitting a noise reduction of up to 37dB. As mentioned, since there is no electronic gear involved, both cost and weight of the headphones will be reduced as well. A couple of small, electro-magnetic receivers function as electro-mechanical amplifiers, delivering a frequency response of between 20Hz and 20,000Hz and a sensitivity of 110.5dB at 1,500Hz. You will be able to pick up the Sensgard ZEM headphones for $90 a pop.