Demon AH-NC600 pdf pdf, $1300, AAAx1 60hr, 99% reduce, 13.5mm, 100mm + 80mm(extention), release 2009, amazon us jp
Creative EP-3NC, AAAx1 100hr, 130cm, review imp3 pchome
Sony nwz-s739, 16G, release 2009-4-1, review mobile01 imp3
Sony nwz-s744/s745/s746, 7G/14G/29G, Li-poly 40hr, -10dB (-90%), pdf jp
Sony nwz-s754, $1250, 7G, -17dB (-98%), manual hk jp, review mobile01
Main office: reduced the OA equipment and air conditioning equipment.
Panasonic RP-HC30, RMB$168, AAAx1 54hr, -12dB@250Hz, 10.7mm, 70cm/140cm
Panasonic RP-HC31, AAAx1 54hr, -15dB@250Hz, 10.7mm, 70cm/140cm
Panasonic RP-HC55, US$50 $648, -18dB@200Hz, 9mm, 70cm, release 2008-10-16
Panasonic RP-HC56, $688, AAAx1 40hr, -22dB@200Hz, 9mm, release 2013-03-21, amazon us (bad nc)
Philips SHN2500 tw, US$15, AAAx1, 9mm, 120cm, release 2006-8-11
Sony MDR-NC13, $338, 1.5m, right ear wire longer, power switch easier to switch on accident, release 2011-02-24, review amazon
Sony MDR-NC22, $628, review mobile01
Sony MDR-NC33, $480, release 2009-11-19, review mobile01
Sony MDR-NC100D, review imp3
Sony MDR-NC300D, $2000, review mobile01
audio-technica ATH-ANC3 , $950 $600(parallel market), AAAx1 50hr, -22dB, 12.5mm, 80cm/100cm, release: 2008-4-28, no hissing sound but weird sound when bus pass bridge's barrier
audio-technica ATH-CKS90NC hk jp, $1300 $1288 $1100, AAAx1 50hr, -22dB, 13mm, 120cm, release: 2009-6-29
