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Neural DSP CorOS 4.1.0 Device Presets screen shown on a Quad Cortex Mini
Gear

Neural DSP's CorOS 4.1.0 brings its X-series plugins, John Mayer included, onto the Quad Cortex

The company calls it the biggest firmware update in Quad Cortex history: five signature plugin packs, eight new effects, and per-device preset saving.

Aug 26, 2026