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How to use
Control from the front panel
The amplifier or preamplifier may be used in stand-alone mode without control systems connected.
Front panel controls are provided for power, source selection, volume and mute status.
Power on and off
To toggle the amplifier’s or preamplifier’s power state, press and hold the unit’s source select
button for three seconds. The LED illuminates green when the unit is ON and red when it is OFF
(standby).
Change source
The audio sources are selected with the “source” button.
The selected source advances with each press of the button, e.g. from 1 to 2, 2 to 3, 3 to 4, 4
to 5 (USB) and back from 5 to 1.
Adjust volume level
Volume level can be adjusted by the “down” and “up” buttons.
Each press of an “up” or “down” button adjusts the volume in 1 dB steps, either to higher or
lower level. If the “down” button is held for a longer period of time, the volume will decrease at a
faster rate of 5 dB/second.
Mute the audio output
To toggle between mute and unmute on the unit’s output, press both “down” and “up” buttons
simultaneously. The three volume level LEDs will blink to indicate the output is muted.
Adjust analog input gain
The gain on the four analog inputs may be adjusted from the front panel.
To adjust the input gain for the currently selected analog input, press and hold the “source” but
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ton. While pressed adjust the input gain by pressing the volume “down” or “up” buttons to set
the desired gain. Release the “source” button.
Note: Gain must be “set by ear” or with external measurement of the outputs as there is no indi
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cation of the actual input gain on the LEDs.
Control from the built in webserver
The amplifier or preamplifier unit can be controlled from the built-in home page using a standard
web browser. The homepage can be accessed through the LAN connection on all platforms or
through the front USB configuration input using a Windows PC.
