The beginning of audio volume controller manufacturing
-Start of TKD's attenuator and volume controller-
The manufacturing start of the rotary type attenuator ( B and C type etc. )complying to the BTS standard of Japan Broadcasting Corp./NHK.
The beginning of TKD's SA series volume controller manufacturing
-From the rotation type, to the vertical line type -
From the rotation type, to the vertical line type attenuator, and to the fader development.
The development of conductive plastic
-The birth of TKD's original fader-
The manufacturing start of CP, CPA series
The development of motor fader
-The automation fader-
The manufacturing start of AF, MF series
The development of fader for the DJ mixer
-The new market of fader-
The manufacturing start of DJ fader.