Lehmannaudio Manual Black Cube Linear - page 8 -
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Elements at the front section
1. Power LED
When this LED lits the Black Cube Linear is connected to mains voltage
switched on and ready for being used.
2. Headphone output 1
6,3mm headphone jack for common headphones. When a headphone is
connected to this headphone output the line output at the rear side of the
unit will be muted. Warning: when you are also using the line output please
make sure that the volume knob is turned to minimum position (counter
clockwise) to avoid sudden signal peaks. Please have in mind that the same
signal amplitudes can result in very different volume levels connected to
power amps or to headphones.
3. Headphone output 2
6,3mm headphone jack for common headphones. When a headphone is
connected to this headphone output the line output will not be muted. This
enables you to listen to headphones and your loudspeakers at the same time
You can connect to headphones of the same type at the same time to the
Black Cube Linear. Please avoid using two different headphones. This may
result in very different levels
4. Volume knob
Here you can adjust the desired output level. Turn clockwise to get a higher
volume and counter clockwise to lower the volume
W A R N I N G :
While using headphones you can easily reach volume levels that can seriously
damage your hearing. Every time before you put on a pair of headphones you must
make sure that the volume is set to an appropriate level!