Front Panel
Simplicity is a design objective in the development of all
Stewart Audio power amplifiers. These amplifiers remain sim-
ple and intuitive to operate even while incorporating some of
the most advanced technology available today.
Power On/Off and LED Clip Indicators
The front panel provides visual feedback of the amplifiers
status. The front panel power switch is accompanied by an
LED which will illuminate upon power-up. (Note there is an
initial delay of up to 30 seconds when the amplifier is first
turned on.) Additional LEDs (one for each channel) will illumi-
nate Green when a signal of approximately –20 dB to 0 dB is
present. When the signal exceeds 0 dB the LED will turn Red
indicating the amplifier is being driven into clipping.
All adjustable controls and connections are located on the
rear panel to provide tamper proof security.
Rear Panel
Level Controls
The DA-770-2 has been equipped with a recessed stepped
level control for each channel, located on the rear panel.
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Inputs
Each Channel has a phoenix type connector which may be
used with either balanced or unbalanced lines.
See
Input Wiring
in the section on Installation (Page 14) for
more details.
Speaker Outputs
Each Channel has a phoenix type connector which may be
used to connect loudspeakers.
See
Output Wiring
in the section on Installation (Page 14) for
more details.
AC Power Connection
All DA-70 Series amplifiers are equipped with a IEC socket on
the rear apron for AC connections.
Models DA-70-2 and DA-70-4 may only be connected to
120VAC mains.
Models DA-70-2-PFC and DA-70-4-PFC are Power Factor Cor-
rected and may be connected to any AC main from 90VAC-
240VAC.
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