Neutron Core NDX Drive Pedal
ToadWorks Leo Jr — 11 Profiles
This pack contains 11 profiles of the ToadWorks Leo Jr, a boutique American-style overdrive inspired by the legendary Rangemaster circuit — but reimagined with a smoother, more amp-like character. Its voicing nods to early tweed Fender amps, delivering a harmonically rich, touch-sensitive overdrive with a natural low-to-mid gain character.
Find out more about NDX here https://www.neutronstudios.com/ndx-dynamix
Included Profiles Each profile in this pack is named using the following format:NC-DRV-LEOJR-NDX-D** Where: D** = The gain setting of the pedal from 0–10 Gain values correspond to physical knob positions as labeled on the pedal (reference image included in the pack)
Due to its high input sensitivity and interactive response, this pedal was captured using our Neutron Inductor to ensure true-to-life pickup interaction and player dynamics.
Neutron Inductor Technology
This profile pack was created using the Neutron Inductor, a custom-built analog front-end that simulates the real electrical load of a guitar plugged directly into a pedal. This crucial component replicates how a pedal reacts to different pickups, volume settings, and cable capacitance — things that standard reamping completely fails to capture.
Many pedals — especially vintage or treble-boost-style circuits like the Leo Jr — rely on this interaction for their tone and feel. Without it, profiles can sound sterile, flat, or simply wrong. The Neutron Inductor solves this by delivering accurate impedance behavior from the source, allowing us to capture even the most sensitive analog designs with unprecedented realism.
Built for the Neutron Core Modular System
These profiles are designed for seamless integration with the Neutron Core ecosystem. Pair with your favorite Core Series amps, PowerPack modules, and Quantum Speaker profiles for a complete modular signal chain that sounds and feels like the real thing — every time.
Combine with Other Neutron Core Components
| Component | Description |
|---|---|
| Pedal Profiles | Use as boost, tone shaping, or gain stages at the front of the chain |
| Preamp Profiles | Found in Core amp packs. Add realism and tone control |
| Power Amp Profiles | Simulate tube output saturation (available separately) |
| Quantum Speaker Profiles | Blend mic types and placements to suit any style or mix |
Realistic Signal Chains — Studio or Stage
Series Example: Leo-Jr → Plexi Preamp → EL34 Power Amp → Vintage 30 Cab
Parallel Example: Leo-Jr into two different preamps with mic blending
🔗 Find out more about NDX here:
Legal Disclaimer All brand names, product names, and trademarks mentioned in this manual are the property of their respective owners. References to these names are made strictly for descriptive and comparative purposes to accurately convey the equipment captured or referenced within Neutron Audio products. Neutron Audio is not affiliated with, endorsed by, or sponsored by any of the brands, manufacturers, or companies referenced.
All Neutron Audio content is the result of original recording, profiling, processing, and engineering work. By purchasing and/or downloading this product, you agree to the following: • The profiles and associated files are licensed exclusively for personal, non-commercial use by the original purchaser.
• Reprofiling, reverse-engineering, reformatting (including conversion to other profiling systems such as ToneX, Kemper, Quad Cortex, etc.), or otherwise creating derivative works based on Neutron Audio content is strictly prohibited.
• Redistribution, resale, uploading, file sharing, or any form of public or private distribution of the profiles or associated materials—whether modified or unmodified—is strictly prohibited.
• Ownership of the digital product remains with Neutron Audio.
You are purchasing a license to use the product, not the product itself. Violations of these terms will be pursued to the full extent of applicable intellectual property law. Thank you for respecting the work and integrity behind Neutron Audio products.
