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Neural DSP Quad Cortex

479 Customer ratings

4.7 / 5

handling

features

sound

quality

244 Reviews

Neural DSP Quad Cortex
£1,399
All prices incl. VAT
In stock
1
C
"LCD backlight Leak is a normal feature" claim Neural DSP and Thomann
Chrissssssss 17.11.2022
We all know what this unit is.
Made of a really nice metal case, slick, elegant, quality on the IRs and all its features, responsive screen, rotary foot switches, sturdy glass on the screen, wifi, possibilities of amp captures and more...
One thing broke my heart a bit. For an unit costing this much and being soo popular, built with this much quality and care, seems that a batch has BACKLIGHT LEAKS on the corners (other users has reported this on the internet).
The reply from Thomann and Neural DSP, apparently is that this is normal.
While the screen is fully functional and nothing seem to be wrong with it, respecting touch feature, as soon as you look at the screen from just a bit of an angle, you will notice a big purple/blue-ish stain on one of the corner from it.

This is not really nice, as for this price and this hype, I wasn't expecting less than perfection.
I have had units that cost 10x less than this product and they DONT have this issue (Mooer 250 and NUX-MG30).

Im a bit heart broken that this was their reply to quality check to be honest.

Some would say: "But it doesn't affect playability, you should not care..." -Well, some purchases are not simply made to gig and that's it. Some purchases mean a bit more that just the item, because they cost hard earned money and specially if you have been waiting for restock for 2 months like me.

Im satisfied with the quad cortex, but still, a bit heartbroken.
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4
Potentially the best on the market…
4TuneMan 07.07.2022
***
Update - after few months and few firmware updates.

Very nice device - still. Still waiting for it to be functional.
In the meantime I learned how to do captures and captured two amps and some overdrive effects. Once you learn (not an easy, "try and miss" process) the level and EQ adjustments the results of the captures are really good.

Yet, as still no NDSP plugins available on QC, I am not playing it anymore. It stays in my home studio to "impress" (nobody's really impressed, as it is rather boring looking gray box). So I am using plugins and since few days the Headrush Prime. Huge, powerful and funny.

I wonder, if QC will ever be fully functional, working like in the initial description from Neural DSP. Maybe may kids will see ;-)

Footswitches I was complaining about are now creaking even louder after some use.

End of update.
***

***
Original review below.
***

I bought this unit after almost two years of “hunting”. Not a fan of prepaids, so was waiting till online availability. And then it happened, so I bought it instantly - happiness :-)

I bought it, as I am using NDSP plugins, and they sound fantastically. Nothing mimics my old Marshall like Nolly plugin. And I remembered, NDSP was promising the ability to have your plugins available in your Quad Cortex. Well, not yet, and there is no date set to it.

About the Quad Cortex self.
PROS
- processing power - it is really there, you may create any crazy signal chains and QC is processing it easily
- great touch display
- good design (both the physical device and the interface)
- footswitches act as potentiometers also (rotary encoders)
- tons of amps and effects to choose from

CONS
- not really built “as a tank”, my impression is QC is rather fragile (comparing it to some other devices I own (no names in the review) :))
- footswitches are very noise (they squeak like they will break any moment)
- because of processing power this unit goes hot, even on standby
- with all the amps and effects available - missing the ones from NDSP plugins, which is big disappointment

I know, I shall read the whole Internet before buying, and not rely on what I remembered from the initial statements of NDSP. The lack of amps and effects from plugins is quite a bad surprise to me.
Otherwise, great unit. Especially, when you want to use it as sound capturing device (did not try it, but youtube videos sound convincing).
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4
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A
As you would expect.
Achrist 24.03.2025
This thing is truly a beast and the hype is justified. There is a lot to wrap your head around when you are new to it and just getting started. But ones you have messed around with it enough to be familiar with everything and started to get things tailored to your playing it is truly a generation masterpiece. There are some artificial details here and there, BUT this thing is the best digital multi effect processor I have ever heard. Truly recommended for the ones who look for GOOD quality sound compacted into one device.
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H
Plain and simple awesome!
Hansen83 13.11.2024
Great interface, tones and versatility. If you do not find your tone with this thing, you probably never will.
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m
awesome technology
mrnesteapeach 08.10.2024
great design and performance in a tiny box, not in the same garden as an amplifier experience but it has the 75% of it in a tiny box- very helpfull if you don't want to carry heavy duty tools for your guitar playing everywhere so its a great balance to have it - Love and Light for everybody.
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GG
state of the art
Gods Guitarist 15.12.2022
After owning Kemper and Helix, the Quad Cortex is definintly the one for me. Its easy to get the sound that your looking for without tweeking for hours or playing with cabs and IR's. The flexibility of pedal controlled parameters is superior. Would give all fives but it doesn't have rubber feet.
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2
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l
Covers all of my needs
lqw666 26.05.2025
Playing in different bands with different needs in sound this is a very good and very portable solution. The learning curve is very minimal; they have a lot of great tutorials online that shows how you can use the unit.
The only thing I can say at the moment is that you better use an external midi controler like the FCB1010 to switch effects and expression controls because the footswitches are to close together.
Highly recommended although a bit pricey
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Neural DSP Quad Cortex