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JS Quad Cortex Mars 74x Ultimate and DI v2 Neural Capture Collection

The JS Quad Cortex Mars 74x Ultimate and DI v2 Neural Capture Collection is based on my Marshall 1974x Handwired amplifier, delivering the raw, dynamic character of this classic British circuit to the Quad Cortex platform.

From open, articulate cleans to fully driven vintage overdrive, this collection captures the natural response and feel of the amp across both channels and multiple volume settings.

What You Get

• 22 Total Neural Captures

  • 11 Amp + Cab Captures

  • 11 Amp-Only (DI) Captures

• 2 Multi-Scene Presets

  • One based on Channel I (Amp + Cab)

  • One based on Channel II (Amp + Cab)

Flexible Workflow

The included presets are designed for immediate use and real-world playing:

• Each preset features multiple scenes covering a range of gain levels

• Built with a full effects chain for a complete, mix-ready sound

• Easily adaptable to your own workflow

You can also:

• Swap in any of the included amp-only (DI) Neural Captures

• Pair them with your preferred cab or IR

• Build entirely new presets around your favorite captures

Amp Character

The Marshall 1974x is known for:

• Classic British midrange

• Open, touch-sensitive response

• Smooth transition from clean to overdrive

This collection captures that behavior across both channels, giving you a consistent and usable range of tones.

Naming Convention (Consistent and Simple)

JS Mars 74x (I or ii) x

• I = Channel 1

• ii = Channel 2

• x = Volume Setting / Gain Level

  • 2, 4, 6, 8, 10

• 2L (Channel ii only)

  • Low Input used

Designed to Be Used

• Plug in and play using the included presets

• Or build your own tones from the raw captures

• Swap cabs, IRs, and effects as needed

Everything is designed to be immediately usable, but fully customizable.

Why This Collection

This is a straightforward, no-nonsense set of classic British tones built for real playing situations.

You get:

• Presets that translate easily to live or studio use

• The flexibility to shape everything to your own setup

If you’re looking for dynamic, responsive vintage tones on the Quad Cortex, this collection delivers.