Two switches extend the palette without adding menus or a second page. COIL selects between IRON and WORN converter voicings. IRON adds a presence lift around 4 kHz and gentle drive that scales with the FIDELITY position. WORN emphasizes the low mids, softens the highs, and adds asymmetric saturation with a light layer of grain. Both voicings are gain-normalized so the change is in color rather than level.
RING activates an aliasing stage that drives and decimates the signal without an anti-alias filter, folding high-frequency content back into inharmonic metallic texture. Its fold point follows the sample rate generated by the FIDELITY control, allowing the effect to remain responsive throughout the sweep instead of appearing only at the extremes.
Designed for Movement
Fidelity Theory is built to be played in real time. Parameter changes are smoothed, switching is crossfaded, and output level is matched across the sweep so users can change character without a distracting jump in volume. The interface scales from 75 to 200 percent and includes 25 factory presets across five Factory preset categories, along with Locker, Favs and Drops (aftermarket preset packs) for organizing sounds.
\nKey Features
- A playable fidelity coordinate: one macro control links sample rate and bit depth across a range of 48 kHz and 6-bit to 6 kHz and 16-bit.
- Two converter voicings: choose IRON for presence and controlled drive or WORN for thicker low mids, softened highs, asymmetric saturation and grain.
- Responsive aliasing: RING creates inharmonic metallic texture with a fold point that tracks the active sample-rate coordinate.
- Clear visual feedback: a live readout shows the exact sample-rate and bit-depth pair at every control position.
- Performance-ready behavior: smoothed parameters, crossfaded switching and level matching make the plug-in safe to move during a take.
Availability
oneTHNG™: Fidelity Theory launches October 10, 2026, as a free 72-hour anniversary drop available exclusively through Modbap's own channels at modbap.com.
After the 72-hour drop, Fidelity Theory will be available at the introductory price of $29.99 for the month of October (regularly priced at $39.99). Dealer availability begins October 13.
Fidelity Theory supports macOS 11 or later on Apple Silicon and Intel, as well as Windows.
To learn more about Fidelity Theory, visit https://in.modbap.com/plugins/onethng/fidelity
About Modbap
Founded by Corry Banks in 2020, Modbap is an independent instrument manufacturer that centered beatmaking and DJ culture in its hardware designs. The company builds Eurorack modules and, beginning in 2026, software instruments and effects. Modbap is based in Southern California.
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