Specifications

Front Panel Control Knob:
The control knob is a continuously rotating control
with a push-switch function.
Volume Control Mode:
The PRE3VB default operating mode allows you to
change volume level by rotating the knob. The
volume down function (counter-clockwise rotation) is
very rapid and allows quick changes in the volume
level. Volume up (clockwise rotation) functions
rapidly up to a displayed volume level of 50.0. There
is a pause at 50.0 until the display dims then the
volume up function continues more slowly to a
displayed value of 60.0 and then slower yet above
60.0. This operation makes it difficult to accidentally
set a volume level that is too high.
Input Selection Mode:
Pressing the control knob in briefly will toggle into
the input selection mode. The selected input will be
displayed for 5 seconds. During this time you can
rotate the control knob to scroll to the desired input.
Pressing the knob again will select the indicated
input. The volume level will automatically ramp down
and up during this selection process. If the control
knob is not pressed for 5 seconds, the indicated
input will automatically be selected and the PRE3VB
will return to the default volume control mode.
Home Theater Bypass Operation:
Input 5 can be set to a home theater bypass mode
(htb) that is used to pass the front left/right outputs
from a multichannel processor output through the
PRE3VB to the main L/R power amplifiers. This
mode must be used with a preamp output which
has volume control function as the PRE3VB
volume and mute controls will not function while
the PRE3VB remains in the htb unity gain setting.
When in the Input Selection Mode, Input 5 can be
toggled between the normal operating mode (In 5)
and the bypass mode for (htb5) by pressing the
control knob 2 times. You will note that the Input
display will toggle between htb5 and In 5. The
display simply reads htb (home theater bypass)
when the bypass mode is active.
Pre In:
This is used to scroll through the inputs, when
initially pressed it will indicate the currently selected
input.