Condition Note: Minor cosmetic blemishes on the bottom of the unit.

Quad Cortex is a compact floorboard amp modeller, capture pedal, and multi-effects processor that delivers unmatched power and flexibility in one unit. It can run complex signal chains with multiple amps, effects, and detailed routing without breaking a sweat. At its core is Neural Capture, Neural DSP’s proprietary AI technology that lets you create digital replicas of your amps, cabs, and pedals with exceptional realism. You can also explore thousands of free Captures and presets on Cortex Cloud, instantly expanding your tonal palette. Quad Cortex comes preloaded with over 90 amp models, 100+ effects, and 1000+ cabinet IRs. With regular free CorOS updates, Quad Cortex is continuously evolving, making it a flexible, future-proof centerpiece for any rig.

Neural Capture - Replicate any amp, cab, or overdrive pedal
Powered by Neural DSP’s proprietary AI, Neural Capture learns the sound and feel of your real amps, cabs, and pedals with unmatched accuracy. In minutes, you can create a digital version
of your hardware that is virtually indistinguishable from the original, no computer or extra software required.

If you don’t want to capture your own gear, you can explore thousands of free Captures in Cortex Cloud, giving you instant access to an endless range of tones.

Cortex Cloud - An ever-growing collection of tones
Explore thousands of free Neural Captures and Presets created by other users and artists, and download them wirelessly through the Cortex Cloud app.

Vast Library of Sounds
Quad Cortex comes loaded with over 90 authentic amp models, 100+ legendary and proprietary effects, and more than 1000 cabinet IRs.

From classics like the Marshall® JCM800®, Mesa® Boogie® Dual Rectifier®, Vox® AC30®, Fender® Deluxe Reverb®, and Peavey® 6505® to iconic pedals such as the Ibanez® TS808®, ProCo Rat®, and BOSS® CE-2W®, every detail is modeled with remarkable realism.

The cabsim module features seven virtual microphones that can be positioned as in a real studio, with full stereo support and easy loading of third-party IRs.

Plugin Compatibility (PCOM)
Quad Cortex supports selected Neural DSP “X” plugins directly on the device with a valid license. Plugin devices behave just like native Quad Cortex blocks, and can be combined freely in your signal chains. This opens up an entirely new palette of tones, bringing together the best of Neural DSP’s plugin ecosystem and Quad Cortex hardware.

Four independent signal paths
Quad Cortex supports four independent signal paths, allowing you to layer amps, process multiple instruments, or build advanced dry/wet rigs with ease. Switching modes include Stomp, Scene, Preset, and Hybrid for maximum flexibility.

Portability & Build
Quad Cortex combines portability with durability. Weighing only 4.2lbs / 1.95kg and measuring 11.4" x 7.7" x 2.7" / 29 × 19.5 × 6.9 cm, it easily fits into a backpack, making it perfect for travel between home, studio, and stage. The rugged anodized aluminum chassis, strengthened glass display, and stainless steel footswitches ensure road-ready reliability, giving you peace of mind wherever you play.

Connectivity & Recording
Quad Cortex integrates seamlessly into any setup with ultra-flexible I/O, including dual combo inputs with variable impedance, dual FX loops, balanced TRS and XLR outputs, a dedicated headphone out, dual expression inputs, and full MIDI in/out/thru support. It also functions as a low-latency USB 2.0 audio interface (24-bit/48kHz) with 8 inputs and 8 outputs, fully compatible with all major DAWs. Built-in Wi-Fi makes firmware updates, backups, and downloads effortless, while Cortex Control provides complete desktop management of every feature.

Key Features

Neural Capture - Create digital replicas of your own amps, cabs, and pedals with unmatched realism
Preloaded with a vast library of modeled devices: 90+ amps, 100+ effects, 1000+
cabinet IRs
Free access to thousands of Neural Captures via Cortex Cloud
Four independent signal paths with flexible routing
Plugin Compatibility (PCOM) - Run compatible Neural DSP plugins on Quad Cortex
Cortex Control - Manage every feature and setting of your Quad Cortex effortlessly in a sleek and intuitive desktop interface
Built-in Wi-Fi for wireless downloads, firmware updates, and backups
Doubles as a USB audio interface (8x8 I/O over USB)
Ultra-flexible I/O: dual combo inputs, dual effects loops, TRS and XLR outs, headphone out, MIDI in/out/thru, USB, dual expression inputs
7” multi-touch display + 11 stainless steel rotary footswitches
Rugged anodized aluminum unibody with 1.8mm strengthened glass
Looper X with advanced looping features
Built-in metronome and live tuner

Amps - Preamps

Egnater M4 Rack Preamp

Fractal Audio Systems Axe-FX III Mk II

Neural DSP Quad Cortex Quad-Core Digital Effects Modeler / Profiler Floorboard