Abstract: The invention relates to a console 1 for use in electronic control operations such as sound recording and/or other effects or applications, comprising a plurality of channels and a transparent touch-sensitive channel selector means 2 operative to select a desired channel of the console, the means 2 being an elongate member, suitably curved, ergonometrically positioned with respect to a position of a user and associated with means adapted to provide a desired function of the console when the means 2 is actuated.

Abstract: Control apparatus is described which can be used to vary two parameters such as the base and treble output levels of a sound system. The control apparatus comprises a rotatable knob having two separate zones of differing electrical conductivity. The location of the users fingers on the knob determines which of the parameters will be varied when the knob is rotated.