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Topics in this section include:
Headphone Monitoring
Connecting Headphones
The 688 provides two headphone
outputs on its left panel, several options
for headphone sources including up to
10 custom presets, plus a variety of
other customizable features related to
audio monitoring.
Connect headphones to either the 1/4-inch or 3.5mm headphone outputs, lo-
cated on the left panel of the 688.
⚠
The 688 can drive headphones to dangerously high vol-
umes. Turn down the headphone gain before attaching
headphones or selecting a headphone source to prevent
accidental high levels. The range for headphone levels
may be set from OFF, -42 dB to +20 dB.
To adjust Headphone gain:
X
Turn the Headphone encoder.
While adjustment is in progress, the gain value will be dis-
played in the lower-right corner of the Main screen next to
the Headphone Source icon.
1/4”
3.5mm
Connecting Headphones
Selecting Headphone Source
Setting Headphone Encoder Mode
Confi guring the Headphone Preset List
Defi ning Custom Headphone Presets
Choosing a Favorite Headphone Preset
Using Headphone Source Shortcuts
Headphone Peak LED