Neural DSP Quad Cortex
REVIEW
NEURAL DSP QUAD CORTEX
100 
GUITARIST  AUGUST 2021
Creating and editing 
presets is easy with 
swiping, tapping and 
drag-and-drop moves 
on the touchscreen
In Use
The presets are built on a grid with four 
rows of eight blocks, each hosting a 
virtual device. This could be set up as four 
individual signal paths, but you have the 
ability to split and mix paths so you can use 
all four rows together to create a complex 
rig. There’s no shortage of presets, either. 
10 onboard setlists can each contain 256 
presets (32 banks of eight). As for the 
virtual devices, you get more than 50 amps 
and more than 70 effects, and there are 
over 1,000 IRs, as well as the opportunity 
to load your own.
Creating and editing presets is quick and 
easy with swiping, tapping and drag-and-
drop moves on the touchscreen. Just tap 
on any on-screen block and its parameters 
show up on the screen as virtual knobs. In 
addition, the footswitches – whose rotary 
caps correspond to those virtual knobs 
– light up, and you then have a choice of 
turning those or using the screen to make 
adjustments.
Hold the tuner/tap 
switch to tune or tap in 
time for tempo change. 
A simultaneous press 
with the down footswitch 
changes modes
The sizeable Volume 
knob is in just the right 
place. Turn it up here!
All the connections 
you need are clustered 
on the back panel
The amount of footswitches makes 
onstage use painless. There are three 
easily toggled main modes for the 
A to H footswitches: Preset, Scene and 
Stomp. In Preset mode, each of the eight 
footswitches calls up a preset in the bank. 
Scene mode uses the footswitches to 
access the eight ‘scenes’ you can have 
within a preset – variations on the theme, 
perhaps with adjusted parameter values 
or a different set of active blocks. While 
Stomp is for those who wish to use the unit 
as a standard effects pedalboard where any 
device block in a rig can be assigned to a 
footswitch for instant recall. 
For all of these modes, the screen can be 
set to Gig View, which divides it into eight 
segments showing what each footswitch 
is assigned to. Expression pedals can be 
assigned to any device and control multiple 
parameters simultaneously.
Neural Capture, using modern AI 
technology, is dead easy to set up, too – just 
follow the on-screen instructions – and 
THE RIVALS
With similar functions for capturing 
sounds, the Kemper Profiler Stage 
(£1,401) combines the Kemper Profiler 
digital guitar amplifier with the Profiler 
Remote foot controller. 
Line 6 modelling and effects floorboards 
are massively popular choices. There’s the 
large Helix Floor (£1,230 street price) and 
the Helix LT (£799 street price), but the HX 
Stomp XL (£599 street price) offers great 
foot-switching ability in a smaller package.
Fractal Audio’s Axe-Fx III is arguably the 
king of the hardware processors, but the 
company’s FM3 floorboard (€1,299) is the 
unit most equivalent to the Quad Cortex, 
but only has three footswitches.




