11
Headphone Use
Your Sigsum incorporates a high quality headphone amplifier capable
of driving most conventional, dynamic headphones. Please be aware
that, because of the amplifier’s ability to drive a wide range of head-
phones, it is capable of driving sensitive designs to very high levels.
Please make sure that you do not use excessive levels, especially
over prolonged periods—permanent hearing damage will result.
Mono Operation
The Sigsum has the ability to switch the stereo signal to mono.
Mono operation is active when its associated Blue LED is illuminated.
Mute
The output from the Sigsum can be temporarily silenced by pressing
the Mute button—again, its operation is indicated by a blue LED.
Press the button again, to go back to normal operation.
Always check that the volume setting has not been inadvertently increased before unmuting the amplifier.
Amplifier protection
In the event of a fault occurring , the unit will protect itself—this will happen when a DC offset or short
-
circuit is
detected, or if the unit exceeds its maximum safe operating temperature. Should any of these faults occur, the MUTE
light will illuminate. In the case of overheating, the unit will reset itself, once it has cooled sufficiently, however, in any
event, you should switch your Sigsum off, and investigate the likely fault (check your loudspeaker cabling, and ensure the
unit has sufficient cooling). If the protection circuit activates on a regular basis, please contact your dealer for support.
