Balanced Audio Technology VK-3 Owner's Manual - page 5
Two types of adapters are available:
Input Adapters:
RCA Female to XLR Male
Output Adapters:
RCA Female to XLR Female.
Mixed Balanced and Single-Ended Systems
Any mix of single-ended and balanced components can be connected to the VK-3 by
following the above instructions.
Description of Controls
Turning the VK-3 On:
When you turn the unit On, the VK-3 will automatically go through a gentle POWER-ON
sequence. During this time the filaments of the vacuum tubes are gradually brought to
operating temperatures and the plate voltages are ramped up for maximum extention of tube
life. At the end of this sequence the unit will automatically unmute, provided the Mute
switch is in Play position. However, since the source volume may be unknown at this time, it
is advisable to turn the volume control fully counterclockwise and place the mute switch in
"Mute" position before powering the unit On.
Turning the VK-3 Off:
The unit can be turned Off at any time (even while playing) without first activating the Mute
switch. It will automatically mute.
Mute function:
The VK-3 has two mute modes: manual and automatic. Putting the Mute switch in Mute
position will always override the automatic function and disable the outputs.
When the unit is powered up it automatically self-mutes until the proper operating points of
the circuitry are reached. It will then automatically go into Play mode, provided the Mute
switch is in the Play position.
Changing the power switch position from On to Off even for short time, will make the unit
reset its power sequencing circuit and mute its output. It will then require about 45 seconds
for the unit to become operational again.