Detroubler — Free Download
A psychoacoustic audio processor that targets and smooths ear-fatiguing frequency areas in mixes, using research-based methods to reduce harshness, boxiness, and other troublesome sonic qualities.

Purpose and Approach
Detroubler is a corrective audio plugin designed to address common frequency issues that cause listener fatigue and mask clarity. Rather than applying broad EQ cuts, it operates on psychoacoustic principles, using models such as Fletcher-Munson curves and the Bark Scale to identify specific areas of auditory discomfort. This makes it a targeted tool for smoothing problematic frequencies that might escape even experienced ears.
The plugin focuses on six distinct frequency zones: boomy, boxy, muddy, honky, harsh, and sizzle. Each zone corresponds to a known problem range, such as low-frequency resonance around 100-250 Hz or piercing high-mids in the 2-6 kHz area. Detroubler reduces these irritating bands and their masking effects, aiming to make audio more pleasant and mixes more defined without aggressive or unnatural processing.
Key Capabilities and Interface
Detroubler’s interface is built around a main Detrouble knob surrounded by six clickable orbs, one for each frequency area. Clicking an orb enables or disables processing for that band, and its brightness indicates the amount of gain reduction being applied. A live spectrum display at the top shows the signal in real time, helping you spot problematic areas and see exactly what the plugin is doing as audio passes through.
A dedicated Listen button lets you solo the processing in real time, so you can hear what Detroubler is capturing as you increase the main knob. Switching off Listen returns the audio to full context, allowing for quick A/B judgment. The interface is resizable and built on vector graphics, ensuring crisp visuals at any size.
Workflow and Practical Use
A typical workflow starts by engaging Listen mode and slowly raising the main Detrouble knob. This reveals which frequency areas the plugin is targeting, with the orbs lighting up according to activity. If an orb shows little movement, that area likely needs no correction. After identifying trouble spots, you can fine-tune by clicking individual orbs to enable or disable processing for specific bands.
Detroubler includes AB comparison for contrasting different processing chains, plus copy/paste functionality and undo/redo for easy experimentation. A large collection of factory presets ranges from subtle surgical correction to broader transformations, serving as starting points for cleaning up vocals, synths, drums, or full mixes. The plugin is designed to be responsive and CPU-friendly, suitable for use across multiple tracks in a session.
Applications and Comparison
Detroubler is particularly useful for taming harsh vocals, reducing boxiness in drums, or softening overly bright cymbals and synths. It can also help clarify muddled mixes by reducing masking in the midrange. Because it is based on psychoacoustics, it is less about surgical EQ and more about making audio easier to listen to over extended periods.
According to the publisher, Detroubler differs from their Deres plugin, which specifically removes the most dominant resonance in the midrange for clarity. Detroubler, in contrast, does not clean resonances but instead smooths and softens problematic frequency areas that mask other details. This makes it a complementary tool for overall mix polish rather than a resonance remover.
Key features
- Psychoacoustic processing based on Fletcher-Munson curves and Bark Scale
- Six targeted frequency areas: boomy, boxy, muddy, honky, harsh, sizzle
- Clickable orbs for enabling or disabling processing per area
- Live spectrum display for real-time signal monitoring
- Listen mode to hear processing in isolation
- AB comparison, copy/paste, and undo/redo
- Resizable vector interface with factory presets
Best for
Best for producers and engineers who want to reduce ear fatigue and clean up harsh, boxy, or muddy frequency areas in vocals, drums, synths, and full mixes, using a psychoacoustic approach rather than manual EQ. It also serves as a quick mixing aid for achieving more defined and pleasant sound.