SMc Audio Virtual Reality Engine Preamplifier VRE-1 - Manual (Page 4)

3
Front Panel layout
•
Input selector switch: Rotary switch selects one of 4 inputs.
•
Polarity switch and LED indicator: Sets system polarity (absolute
polarity, sometimes called “absolute phase”). Up is normal, non-inverted
polarity, and flipping the switch down inverts signal polarity. The LED then
lights to indicate that system polarity is inverted. Polarity switching is done
at the user’s discretion and “correct” system polarity is determined by ear.
•
Power LED: Indicates that system power is present.
•
Mute switch and LED indicator: Switch up for listen; down for mute.
The LED will light to indicate that mute is engaged.
•
Volume control: Set system volume with this precision 24-step
attenuator. Note: in order to extend the useful range of this control,
turning the control fully counter-clockwise (all the way down) does not turn
the sound fully off. Engage the Mute switch for system silence.
-------------------------------