Front Panel - Hall Research Technologies AMP-7040 User Manual

70/100 Volt, 40 Watt Audio Amplifier with RS-232
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Front Panel

The SEL INPUT button and A/B/C LED indicators select which line input on the rear panel is
mixed into the MIC INPUT, RCA, 3.5mm or SPDIF inputs respectively.
If you are not using microphone input, it is suggested that you reduce the MIC volume to zero
so you do not add noise from the microphone amp into the output audio.
The ADJ button is used to select which parameter to adjust, then the Up and Down arrow
buttons to make the adjustment.
This button is for Muting the audio
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