TDK 1972-74 JAPAN

Type I: D -> SD -> ED

Type II: KR

There is a slight difference between US/EUROPE and JAPAN version of D and ED. (on D we have "HIGH OUTPUT" in US and "LOW NOISE" in Japan, on ED we have "FULL-BODIED SOUND" in US and "SONOROUS SOUND" in JAPAN). There are two versions of KR one older with "High output" and the other one with "Chromium dioxide * High Output".