Allen & Heath                                                       19            GS_R24 User Guide 
STEREO INPUT CHANNEL 
MUTE
I/P=DAW
SEND=
DAW
SOLO/
SELECT
POST EQ
10
0
10
20
30
40
DAW send source switch 
This switch determines the source for the interface send for the stereo chan-
nel. In the up position the source is taken from the post-level input signals. If  
the switch is pressed then the source is taken from after the stereo EQ. One 
or the other signal will always be sent to the interface. 
INTERFACE CONFIGURATION SWITCHES 
Stereo input channel source = DAW 
The I/P=DAW switch swaps the source for the stereo channel from the Jack 
socket/RCA phono connectors to the interface returns for that channel. 
Mute Switch 
This mutes or cuts the signal to the mix buses, the post-fade Auxes and the 
pre-fade Auxes (where muting is enabled).  A rectangular LED illuminates to 
show the Mute switch is pressed. The “soft” mute circuit has a time constant 
of 30mS for minimum Fourier clicks caused by sharp edges, and can be trig-
gered by soloing another channel in Solo in Place mode.   
Solo/Select Switch 
The channel solo/select switch is multi-functional switch that operates as a 
channel solo switch or a MIDI select switch to control DAW parameters, 
The modes are set by selector switches in the master section and are as fol-
lows: 
1)  PFL: Sends a pre-fade (also pre-mute) mono sum of left & right signals 
from the stereo channel to the monitoring system. 
2)  AFL: Sends an after-fade (also post Bal) stereo signal to the monitoring 
system. 
3)  Solo in Place: Any pressed solo switches will mute other mono input 
or stereo input channels (unless SiP safed) unless their solo switches 
are pressed also (in ADD mode). 
4)  Select: The channel monitoring is disabled and the switch sends a MIDI 
message. The LED illumination can be tallied internally or can be tal-
lied by the DAW in order to maintain synchronisation of status. 
Fader 
A 100mm stereo fader controls the level of the left & right channel signals to 
mix buses and post-fade auxes. The stereo channel faders are not MIDI en-
abled and cannot be motorised or automated.