Neural DSP Quad Cortex
• 50+ amp models
• 70+ effects
• 1000+ Impulse 
Responses
• 7” display with 
multi-touch sensors
• AI-powered Neural 
Capture™
• Proprietary stainless 
steel stomp+rotary 
actuators
• 2GHz Quad-Core 
SHARC® architecture
• Anodized aluminum 
unibody
• WIFI for wireless 
preset sharing, cloud 
backups and firmware 
updates
• Extra control via the 
Cortex app
• Dual combo inputs
• Dual effects-loops
• 2x 1/4” output jacks
• 2x XLR output jacks
• Headphone output
• MIDI in, out/thru
• Dual expression 
inputs
• USB audio interface 
with Cirrus Logic 
codecs
AT A GLANCE
N
eural DSP is no stranger 
to delivering high quality 
amp modelling, you just 
need to check out its 
stellar roster of plugins 
to see that. So when the Helsinki-
based fi rm showed up to last 
year’s NAMM with the Quad 
Cortex fl oor modeller, you’ll 
understand we got pretty excited 
about it, in fact, the whole 
guitar-playing world seemed to 
get quite giddy over the prospect. 
Not just because a revered 
software company had released its 
fi rst hardware product, but what 
lay within its aluminium unibody.
From the off , the Quad Cortex 
promises unrivaled power in such 
a small footprint that Neural DSP 
calls it “the most powerful fl oor 
modeller on the planet”, stuff ed 
with 2GHz of dedicated DSP power 
straight out of its Quad-Core 
SHARC processor. 
All that power doesn’t mean 
a thing if it can’t deliver sonically 
and you can be rest assured that it 
can, in spades. But that’s not all, 
one of the biggest surprises on 
using the Quad Cortex for the 
fi rst time was how intuitive the 
interface layout is. As soon as we’d 
plugged in, we were instantly 
surfi ng the huge number of 
presets, cycling through and 
adding various eff ects as if we’d 
been using it for years. With the 7” 
screen, there is plenty of screen 
real estate to fi t the whole signal 
chains, without the need for 
diff erent menus dedicated to just 
eff ects, or amp models, etc.
For live performance, there are 
three main operation modes to the 
Quad Cortex, you can select either 
Preset, Stomp, or Scene. Preset 
mode allows you to use the eight 
stomp buttons to select one of 
eight presets per Bank and with 
the up and down stomp buttons 
cycle through those Banks, with 
a total of 32 available, meaning 
you have 256 presets to play with 
before you even need to start 
creating your own. Scene mode 
allows for eight snapshots of one 
preset, so you can bypass eff ects 
and tweak settings for eight 
diff erent versions of the same 
preset, which eff ectively gives you 
over 2000 factory presets alone. 
Stomp mode drills down into a 
preset even further by allowing 
you to assign individual eff ects, 
amp models, Neural Captures and 
IRs to one of the eight stomp 
buttons. Once the individual 
module is selected then the eight 
stomp buttons can be used as 
rotary encoders for settings 
within that eff ect - genius!
The architecture for each preset 
is fl exible as it comes and allows 
you to experiment to your heart’s 
content. The individual models 
within a preset are laid out in a grid 
and when building your own, you 
can build up to four individual 
signal routings with an amp 
model, plus eff ects on each one, 
NEURAL DSP QUAD CORTEX
One of the most hotly-anticipated floor modelling 
units is here to make you rethink your rig
 WE’RE CONVINCED THIS IS THE 
ONE PEDAL TO RULE THEM ALL 
Photography Olly Curtis
£1449
1
STOMP+ROTARY 
ACTUATORS
That’s ‘twisty stomp 
buttons’ to you and 
us! A crazy amount of 
development has 
gone into the whole 
board, but the rotary 
actuators feel like the 
cherry on the cake.
2
INTERFACE
While all the 
functions are 
accessible via the 
touchscreen, the 
Quad Cortex also 
excels at giving much 
of this control over 
to the footswitches 
– perfect for gigging.
3
MORE HOLES 
THAN A SLICE 
OF LEERDAMMER
There’s enough I/O to 
sate any guitarist’s 
setup needs, be it in 
the studio, or on the 
road. With effects 
loops, multiple 
outputs and inputs, 
USB, plus MIDI and 
dual expression pedal 
ports at your disposal.
1
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REVIEW
87
JULY 2021  TOTAL GUITAR
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