adding the shing touches to new Elektor synthesiser

The final article on the basic version of the NEW Elektor synthesiser describes the control and output module (COM). This was originally designed for the Formant synthesiser and was fully described in the April 1978 edition of Elektor (page 4-33). It includes a preamplifier with bass, middle, treble and volume controls. The power supply for the synthesiser is very simple and consists of virtually only two voltage regulator ICs.