Balanced / Unbalanced Inputs
All DA–70 Series amplifiers feature Phoenix Type input Con-
nectors, which will accept either balanced or unbalanced sig-
nals
.
Output Connections
All DA–70 Series amplifiers feature Phoenix Type output Con-
nectors, one for each channel.
Total Protection
The DA-70 Series amplifiers employ circuitry which fully pro-
tect the amplifier while avoiding sonic compromise.
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 when the amplifier is being pushed into clipping.
Level Controls
The DA-70 Series has been equipped with a level control for
each channel, conveniently located on the front panel. With
typical program level present, adjust each channel to provide
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the desired output level. If
undesirable distortion is
pre-
sent, check preceding components and make necessary ad-
justments.
Rear Panel
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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