Rotary ki o se ituaiga ki e sui ai le au e pulea ai le ki-off o le fesootaiga autu. E lua fo'i fa'asologa o suiga fa'asolosolo, e ta'ua, o le tasi-pole iunite fausaga ma le tele-pole tele-tulaga fausaga. E masani ona faʻaaogaina faʻatasi faʻatasi ma potentiometers faʻapipiʻi tasi-pole i talosaga, aʻo tele-pole multi-position switches rotary e tele lava ina faʻaaogaina mo le fesuiaʻiina o le matagaluega galue.