Constellation Audio Virgo Preamplifier - Manual (Page 10)

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Controls / displays / indicators
11. Front indicator—power supply
The Virgo’s external power supply has a blue LED power
indicator near the top of its front panel. When you switch
the Virgo on, the light will not glow. After a few seconds,
when the power supply and preamp are warmed up, the
blue LED will glow steadily. When you switch the Virgo off
from its remote control, the blue LED will go out after 10
seconds.
12 – 18. Front panel controls
The front panel includes an LCD touchscreen and two knobs plus five buttons positioned underneath the
display. These buttons allow you to control the Virgo without its remote. The functions of the buttons are shown
using icons on the Here are the functions of the buttons and knobs:
12. Balance
This knob adjusts left-to-right balance when an input screen is displayed—i.e., when an input is selected. Turn
the knob counterclockwise to shift the balance to the left, clockwise to shift the balance to the right. An
onscreen indicator will indicate if the balance is centered or how far it is shifted to one side or the other.
NOTE: The light-dependent resistors used in the volume control reach optimal performance only after warm-up.
If the preamp has not warmed up for 15 to 30 minutes after initial power-on, you may notice a slight balance
difference between left and right channels. This can easily be corrected with the balance control.
13. Volume
The volume control is always active when the Virgo is powered up and the mute is deactivated. Note that the
control is calibrated in negative decibels (-dB), reaching maximum volume at 0.0 dB and minimum at -99.0 dB.