User Manual
Qu Mixer Reference Guide  29   AP9372 iss.8 
Preamp  
An analogue preamplifier (‘head amp’) matches each 
connected microphone or line signal to the operating 
level of the console before it gets converted to digital 
to be processed and mixed with the other channels. 
Source lets you choose one of four sources as the 
input to the channel. Press the Fn key to open the 
Source screen. 
Local = Mic/Line socket on the Qu rear panel. 
dSNAKE = Remote preamp from AudioRacks. 
Qu-Drv = Playback from USB hard drive. 
USB B = Audio streaming from a Mac computer. 
Touch the CH buttons to highlight those you 
wish to change. Select the source from the list. 
Input Patching – dSNAKE sockets can be 
patched to any channel. A socket can be 
patched to more than one channel. 
Touch the Source page Patch button. This is a 
shortcut to the I/O Patch / dSNAKE In page. 
Touch a CH or ST button and turn the screen 
rotary to select the dSNAKE socket number. 
The button code indicates dSNAKE device: 
N/C = No AudioRack is connected 
Main = First AudioRack 
Exp = Second (Expander) AudioRack 
The reset default patch is one-to-one mapping of 
dSNAKE to channel. 
 The default patch for Qu-Pac is CH1-16 = 
Local1-16, and CH17-32 = dSNAKE 1-16. 
Input patching can be changed and is stored in 
Scene memories. 
Channel Preamp source 
Local (red Gain) – Rear panel Mic/Line sockets 
feeding the internal Qu mixer preamps. These are a 
pad-less design featuring wide gain range. 
dSNAKE (yellow Gain) – Remote preamps located in 
an AudioRack on stage or other remote location and 
connected to the Qu dSNAKE port via a Cat5 cable. 
The AudioRack preamps include 20dB Pad switching. 
Channel USB source 
Qu-Drive source (blue Gain) – Stereo or multitrack 
playback from a USB hard drive plugged into the top 
panel Qu-Drive port. Provides a +/-24dB Trim control. 
USB B source (blue Gain) – Multi-channel streaming 
from a Mac computer via the rear panel USB B port. 
Provides a +/-24dB Trim control. 
Local (red Gain) dSNAKE (yellow Gain) 
Qu-Drive (dark blue Gain) USB B (Light blue Gain) 
Choose either Qu-Drive or USB. 
This is a global control that 
affects all channels. 










