Neural DSP has shrunk its flagship Quad Cortex floor processor into a half-sized unit priced at $1,400, winning a Best in Show award at January’s NAMM show in Los Angeles while retaining the full processing power of its $1,975 predecessor.
The Quad Cortex mini measures 8.9×4.6×2.5 inches and weighs 3.3 lbs, trading the original unit’s larger footprint and additional footswitches for a more compact form factor with four switches. According to the announcement, processing capability is unchanged between the two models.
The Helsinki-area company, founded in 2017 by Chilean immigrants to Finland, built its reputation selling guitar amp modeling plugins for around $100 each — software that, the firm says, can replicate recording chains worth $10,000. The original Quad Cortex hardware, launched in 2020, extended that approach into a floor unit housing hundreds of amp, cabinet, and effects models.
How the modeling works
The underlying technology bypasses traditional circuit-by-circuit modeling. Instead, it analyzes input and output signals to calculate what a given piece of hardware does to a guitar signal — without needing to understand the circuit itself. Each recorded “capture” represents a static snapshot of one specific knob setting, which created a bottleneck when modeling gear with complex parameter combinations.
In 2024, the company addressed that bottleneck by deploying a robot named TINA. Robotic actuators connect directly to a target device’s physical controls, automatically rotating knobs and recording captures across what the firm describes as “thousands of control positions” per device. A neural network then constructs a dynamic model capable of inferring how the device would behave at any setting — including positions that were never directly recorded.
The distinction matters. Earlier captures produced static models tied to fixed settings. TINA-assisted models respond to parameter changes in real time, behaving more like the original hardware than a photograph of it.
A smaller box, same engine
The mini carries the same processing hardware as the original Quad Cortex and access to the same library of modeled gear, much of which ships with the device. The tradeoffs are physical: fewer footswitches and a smaller chassis, which the company appears to be positioning toward players who record rather than those running large live rigs.
The original unit remains available at close to $2,000. At $1,400, the mini sits below it — though both occupy the premium end of a market that also includes Universal Audio, Kemper, Line 6, and Fractal.
Six products received Best in Show recognition at NAMM this year. The others came from larger, established brands including Yamaha and Boss. Neural DSP, still a relatively small operation by industry standards, took one of the six spots with the mini — a notable outcome for a company that did not exist until eight years ago.
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