Description of controls, Power switch, Phase switch – Balanced Audio VK-P12SE Phonostage User Manual
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Description of Controls
Power Switch
The power switch toggles between two positions: OFF and ON. Putting the
unit in the OFF position (even for a short period of time) will reset the soft
start and mute circuits.
The VK-P12SE will then require about 45 seconds to return back to normal
operation.
When you turn the unit ON, the VK-P12SE will automatically go through a
gentle power-on sequence. At the end of this sequence the unit will
automatically unmute. However, since the source volume may be unknown at
this time, it is advisable to turn the volume control on your preamplifier fully
counterclockwise and place the mute switch in the "Mute" position before
turning the VK-P12SE ON.
Phase Switch
The Phase switch on the front panel of the VK-P12SE allows the user to
compensate for recordings made in inverted polarity. It toggles between
two positions: 0
o
and 180
o
. The LED will light when the unit is put in its 180
o
state. With this switch in its 0
o
position, the VK-P12SE performs as a non-
inverting preamplifier. Switching into the 180
o
position will invert the
absolute phase of the signal.
It is important to note, however, that in both 0
o
and 180
o
positions of the Polarity switch the signal passes through exactly
the same signal path elements and components.
Output Muting
The output of the VK-P12SE phono stage has a mute relay that disables it for
about 45 seconds every time the unit is turned ON.
When the unit is powered up it automatically self-mutes until the proper
operating points of the circuitry are reached. It will then go into normal play
mode.