2005-05-31 モノラルイヤホン video gear MDR-EX17MM http://www.ecat.sony.co.jp/avacc/headphone/acc/index.cfm?PD=860&KM=MDR-EX17MM DMQ-3R http://www.audio-technica.co.jp/products/hp/dmq-3.html TP-5R http://www.jvc-victor.co.jp/accessory/headphone/tv/#tp5lr TP-3R http://www.yodobashi.com/enjoy/more/i/cat_1045_140_143389_883/2262596.html