grace design m906
owner’s manual
19
tHe LeveL DiSPLaYS
The large blue LED displays located to the left of the headphone and main level encoders show relative
level values in dB. The range is 0 to 100 with 0 being full-off and 100 equaling unity gain, or full-on level.
In CAL mode (discussed later), the LED display labeled main level/edit is used to display edit parameters
as they’re being changed.
USinG tHe HeaDPHone oUtPUtS
The m906 provides two reference headphone outputs, via ¼” TRS jacks wired as left channel to Tip,
right channel to Ring and ground to Sleeve. One is located on the front panel of the Audio Control Unit
and the other is on the rear of the remote control unit. Both may be used simultaneously. The m906
headphone amplifier is essentially the same technology as our m902 reference headphone amplifier.
HeaDPHone oUtPUt mUtinG / RecaLLinG tHe HeaDPHone oUtPUt LeveL PReSet
The HEADPHONE level encoder switch is used for two functions. The first of which is headphone output
muting. When the headphone output is on (level is not set to 0.0) “double clicking” or depressing the
switch twice rapidly will set the headphone output level to 0.0. This change will be reflected in the
HEADPHONE output level display.
The second function of the HEADPHONE encoder switch is to recall the stored headphone level preset.
When the headphone output level is off (level set to 0.0) “double clicking” or depressing the switch twice
rapidly will restore the output to the saved preset level. This change will be reflected in the HEADPHONE
output level display. The HEADPHONE output level preset can be set in CAL mode (discussed later).
Note: By setting the HEADPHONE output level preset at your normal listening level, the headphone output
can be conveniently muted and restored very quickly.
USinG tHe HeaDPHone oUtPUtS to monitoR 5.1 cHanneLS
When you have a 5.1 source selected for monitoring, the headphone outputs will normally only allow
you to hear the left and right channels from this 5.1 source. There may be times, however, when you
may want to listen with headphones to other channel combinations of the 5.1 source. We’ve included a
feature that allows you to do this. Here’s how this works:
1. First, select a 5.1 source input; analog or digital. Please note that this special 5.1 headphone mode cannot be made
active if your current source selection is stereo.
2. Press down and hold the headphone level rotary encoder switch for about 4 seconds. This action will turn the 5.1
headphone feature on.
3. Notice that the Left and Right channel solo/mute switch LEDs are now illuminated. This indicates which pair of
channels is currently being fed to the headphone outputs. You’ll also notice that the solo/mute master mode switch
LED is extinguished. This is because this switch is not used in this mode.
4. The channel switches in this mode, unlike normal solo/mute mode, act in an interlocking fashion. This means that
once you select a new pair of 5.1 channels to monitor through your headphones, the previous channel selections are
automatically turned off.
