Believe it or not, the -12V is used for the audio! Maybe not the GP's technobabble. http://www.ianstedman.co.uk/amiga-power-supply-guide/ http://www.ianstedman

Believe it or not, the -12V is used for the audio! Maybe not the GP's technobabble. http://www.ianstedman.co.uk/amiga-power-supply-guide/ http://www.ianstedman.co.uk/amiga-power-supply-guide/ > What is the -12V supply on the Amiga used for? > It is used for the RS232 transceiver chips and to power the Op-Amps in the audio circuits. So the Amiga's audio just won't have that oomph without that -12V power.