Constellation Audio Altair II Line Stage User Manual
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6. USB / control
This USB jack is used to interface the Altair II with
third-party control systems such as those from AMX,
Crestron and Control4, and also to update the Altair II’s
firmware. For more information, contact your dealer.
7. Trigger
This 3.5mm input jack allows the Altair II to turn a
connected device (such as a Constellation Audio
amplifier) on and off automatically. When the Altair II
is powered up or in Standby mode, this jack emits a 12-
volt DC signal. When the Altair II is powered off
entirely (by holding the front panel power button down
for 5 seconds), the jack emits no signal. This jack will
work with any device that can accept a standard 12-
volt trigger signal.