AYRE TK-8150 - Manual (Page 10)

Controls and
Operation
To achieve the highest possible sonic performance, the KX-R
uses custom-designed rotary switches with solid-silver contacts
for both the volume control and the input selector. These
military-spec controls provide unsurpassed signal purity, as well
as a virtually unlimited lifespan.
These rotary switches are actuated with precision stepping
motors using aerospace “fly-by-wire” technology. Turning one
of the knobs generates pulses via contactless optical encoders. A
microprocessor decodes these commands and sends control
signals to operate the stepping motors, resulting in a reassuring
audible “thunk” as the switches are rotated.
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