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Turn On Options Switch
For convenience, there are three ways the Zamp Quattro can be turned on and off:
• Manually, by pressing the Power button on the front panel.
• Automatically by audio, when an audio signal is present at any of the audio Input jacks.
• Automatically by 12V, when a suitable trigger voltage is applied to the 12V input jack.
Note: When either automatic turn on option is selected the front panel Power
button is disabled so that power on/off is determined solely by the triggering
preamp, receiver or active audio signal.
Manual Position
When the Turn On Options switch is in its Manual position the Zamp Quattro must
be turned on and off manually by pressing the Power button on its front panel every
time you wish to use your audio system.
Audio Position (Automatic on/off)
When the Turn On Options switch is set to one of the two Audio positions, the Zamp Quattro will be
turned on only when an audio signal is present at any of the Input jacks or the Speaker Level Input.
After the audio signals cease the Zamp Quattro will remain on for about 8 minutes before shutting
off. This prevents unintended turn-off during pauses in your music or movies.
Note: All four channels of the Zamp Quattro will always power up together, there is no independent
power control for Zone 1 and Zone 2. There are two Audio settings:
Quieter:
This is the more sensitive setting. This will automatically turn the amp on with a very
low level audio signal. This corresponds to about 1mv of voltage. In most cases this will be the
better setting to use. If for some reason the amp never turns off you may have some noise in
your system that is false triggering the turn on circuit. In this case you should use the Louder
setting.
Note: If you need the Zamp Quattro to turn on at an even lower volume level, simply turn
down the Level controls of all channels. Start with the level controls at 12 o'clock and
see if the volume level is low enough when the amp turns on.
Louder:
This is the less sensitive setting. This setting requires a slightly louder audio signal to
automatically turn the amp on. This corresponds to about 10mv of voltage. You should first try
the Quieter setting. If for some reason the amp never turns off when set to Quieter then you
might have a large amount of background noise (or hiss) in your system, if this is the case then
you can use the Louder setting.
Note: The Audio position of the Turn On Options switch disables the front
panel Power button.
Note: When set to the Audio position, the Zamp Quattro will remain on for
about 8 minutes after the music has stopped before shutting off. This
prevents unintended turn-off during pauses in your music or movies.
12V Position (Automatic on/off)
When the Turn On Options switch is set to its 12V position, the Zamp Quattro is turned on and off
only with an external +9 V to + 12 V voltage from your preamp, AV receiver or home controller.
When the external voltage ceases the Zamp Quattro will turn off immediately.
Note: All four channels of the Zamp Quattro always power up together. There is no
independent on-off control for Zone 1 and Zone 2.
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