AYRE TK-8150 - Manual (Page 11)

The two front-panel buttons employ contactless, sealed
piezoelectric force sensors that will never wear. Please note that
the buttons do not move as they sense the applied force.
The piezoelectric buttons respond to a normal pressing action
or a light tap that produces a relatively rapid change in force.
They are not “touch-sensitive”, nor will they respond to a
slowly increasing pressure.
All of the front panel controls are duplicated on the included
remote control handset. This handset also includes additional
functions that are less frequently used, as well as the ability to
control an Ayre disc player.
Standby/Operate
There is a small green LED at the right-hand side of the
front-panel display. This is illuminated when the preamplifier
is in standby mode. The unit may be toggled between standby
and operate modes either with the left-hand button or via the
remote control handset.
Input Select
The desired source component may be selected with either the
left-hand knob or the remote control handset, and the assigned
name is displayed on the front panel.
Although there are eight total inputs on the Ayre KX-R, only
the activated (named) inputs will be listed among the available
sources. This greatly simplifies operation of the unit.
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