Allen&Heath GS3000 - Manual (Page 16)

GS3000 U SER G UIDE 16
Valve drive – Use this control to adjust the gain of the valve stage. This control can be used
creatively to overdrive the valve circuit and produce rich second harmonic distortion sought after by
many guitarists or the characteristic warm sound revered by vocalists.
HI-CUT – Press this switch to remove harsh high frequencies produced when overdriving the valve
circuit.
LEVEL – This control adjusts the output level from the OUT jack on the rear panel. Use this control
to compensate for the high level when the valve is overdriven and to match the signal to the normal
operating level of the channel it is patched into.
PFL – Press PFL (Pre-Fade Listen) to listen to the valve pre-output level signal on headphones or
control room speakers. The signal level is shown on the L and R bargraph meters.
P ATCHING THE VALVE OUTPUT
The output of the valve channel can be patched into any console INSERT using a standard TRS
jack to jack lead.
tip = send
ring = return
tip = not connected
ring = signal
CHANNEL
OR BUSS
INSERT
VALVE
OUT
Patch lead wiring
GS3000 rear panel