Neural Dsp

Market position

The company is described as a leading developer of guitar DSP technology. The Quad Cortex is among the best-selling floor modelers, reported as the number one product in its category in the United States since launch and, per the CEO, the top-selling product overall at European retailer Thomann. Reviewers have called the Quad Cortex a new benchmark in amp modelling, and the company's products have received multiple magazine awards for amp modelers and multi-effects pedals between 2021 and 2026. Competitors in modelling and profiling include Fractal, Universal Audio, Line 6, Kemper and, in the compact capture category, IK Multimedia's ToneX.

Neural DSP combined amp modelling and user capture/profiling in a single portable unit and emphasised user experience — a touchscreen interface, Wi-Fi and continuous feature updates — rather than competing only on tonal accuracy. Its robotic data collection (TINA) plus machine learning shortened the time needed to produce accurate models, which the founders credit for closing the gap with more established competitors. Cross-compatibility between desktop plug-in licences and the hardware, and a shared cloud library of user captures and presets, further tie its software and hardware lines together.

Technology

Neural DSP builds digital signal processing models of amplifiers, cabinets and effects, using machine learning to accelerate model creation, work supported by Aalto University's DSP program. Its TINA robot mechanically manipulates the controls of an amplifier under test and records and annotates the resulting audio, which the company says removes human bias and speeds up DSP development. Neural Capture technology (updated to Version 2 in 2025) lets users profile their own analog rigs on the hardware and share captures via the Cortex Cloud. The Quad Cortex runs four SHARC+ processors providing 2 GHz of DSP power with a touchscreen interface and Wi-Fi connectivity; plug-ins run on Windows and macOS, with a growing subset also running on Quad Cortex hardware through CorOS updates.

Go-to-market

The company established its brand first through comparatively low-cost plug-ins before launching hardware, using signature plug-ins co-developed with high-profile guitarists to build visibility. It sells direct to consumers online with free trials and seasonal promotions (for example a free plug-in with Nano Cortex purchases during a Black Friday sale), and distributes hardware via retail dealers including large European retailers. Marketing has also relied on artist partnerships and video campaigns, and on a user community that shares captures and presets through the Cortex Cloud. Nearly all sales are exported outside Finland.

Guitarists and bass players, from home and hobbyist users to touring professionals and studio engineers, plus, with the Mantra plug-in, vocal producers.

Geography

Headquartered in Punavuori, Helsinki, Finland, with manufacturing in Finland and roughly 99% of sales made outside the country; products are sold worldwide through a dealer network and directly online, with pricing differentiated for EU/UK and international customers.

History

Neural DSP began recruiting designers in late 2017 and early 2018, releasing the Darkglass Ultra plug-in in April 2018 and Fortin Nameless that September, the latter being its first major commercial success. The Archetype signature plug-in series raised the company's public profile and funded work toward hardware. Development of the Quad Cortex required programming many DSPs simultaneously, a slow and costly process that the company accelerated using machine learning with assistance from Aalto University's DSP program; Castro described the early development as "a black hole of money." Production was later complicated by COVID-19 supply chain shortages that put the company at risk despite millions of dollars of investment. The Quad Cortex debuted at NAMM 2020. By 2021 revenue was split evenly between software and hardware. Castro was named Finland's EY Entrepreneur of the Year for 2022, and Castro and Cresp were subsequently recognised by Finnish President Sauli Niinistö for the company's international success. In 2024 Neural DSP disclosed TINA (Telemetric Inductive Nodal Actuator), a robot that physically operates an amplifier being modelled while recording and annotating the results. The Nano Cortex followed in late 2024, Mantra in 2025, and the Quad Cortex mini and Darkglass Ultimate plug-in in 2026, alongside an updated company logo introduced in January 2026.

Risks & controversies

The Quad Cortex's development was capital-intensive and, combined with COVID-19-era supply chain shortages, put the company at risk of closure despite millions of dollars of investment. The Nano Cortex launch in 2024 was accompanied by a video marketing campaign that was very poorly received. Competitive pressure has increased as rivals such as IK Multimedia's ToneX brought compact capture technology to market. Some plug-ins remain desktop-only or lack Quad Cortex compatibility, and compatibility for certain titles has been delayed or not yet begun.