ABSTRACT
Some sort of preamplifier or control unit is required in all hi-fi systems, even if its only
function is to select the source and set the volume. You could even argue that the source-
selection switch could be done away with, if you are prepared to plug and unplug those
rhodium-plated connectors, leaving a ‘preamplifier’ that basically consists solely of a volume-
control potentiometer in a box. Mind you don’t catch your sackcloth on those heat-sink
corners, and try to keep the ashes away from the turntable.
