Arswerk’s reverb plugin Nyx is available as a free download for a limited time. The offer is ending soon, so grab it while you can. This post covers the download details and an overview of Nyx.
What Is Arswerk Nyx?
Nyx is a harmonic reverb that lets you design a room in meters and makes the tail follow the chords you play so it rings in the key of your song. The latest Nyx 1.3 is the biggest update yet. It adds the new NYX 2 engine, which is dense from the very first moment with no pitch wobble in the tail, six algorithms, ray-traced rooms designed in meters, and a HARMONY page where the tail sings back the chords you play. Presets saved in earlier versions sound exactly the same thanks to the CLASSIC engine.
Key Features
- NYX 2 engine: dense from the first moment, no pitch wobble in the tail, and decay time per octave can be drawn as a curve
- 6 algorithms: Space, Steel Plate, Spring, Gated, Reverse, Bloom
- Design real rooms in meters, from a small studio to a 1 km wide hall (shape, height, 38 materials, pillars, seating and audience are reproduced with ray tracing)
- MATCH IR: load a recording of a real place and Nyx builds a room that sounds similar
- HARMONY: listens to the chords you play and the tail sings back in the key (clashing notes decay first)
- Tempo sync, sidechain ducking, DISTANCE, FREEZE LAYERS, and headphone mode
- CLASSIC engine: a 16-line FDN that produces smooth, dense tails that never sound metallic
- DESIGN SPACE: draw your own room and its shape is actually reflected in the reflections
- SPACE PAD: drag the puck to adjust size and brightness in real time
- 12 preset spaces: Hall, Cathedral, Cave, Plate, Cosmos, Abyss, Nebula, Underworld, Aether, Glass Temple, Black Hole, Dreamfall
- Consonance and Tension, pitch-selectable Shimmer (+12, +7, +5, -12, +12+7, +19), and the SPECTRAL engine
- 3-band decay (BASS, HIGH DECAY, damping), Evolve, infinite Freeze, Gate, and Ducking
- Scene morphing: four space snapshots with automatable Scene and Blend controls
Sample sounds used in the video: Splice Sounds
- 91V_NS_110_vocal_hook_wide_awake_dry_Fm
- 91V_NS_110_bass_synth_fallin_reese_tape_Fm
- FL_TD_Drum_Loop_09_110_Hats
- dd_110_drum_loop_shape_kick
How to Install and Activate Nyx
Enter your email address in the form on the official page and click “Get Nyx free”. You will receive a download link and a free activation code by email. Move the downloaded plugin file to a folder your DAW can load, then paste the code when you launch the plugin to activate it.
Windows
- VST folder: C:\Program Files\VSTPlugins
- VST3 folder: C:\Program Files\Common Files\VST3
macOS
- VST folder: Macintosh HD/Library/Audio/Plug-ins/VST/
- VST3 folder: Macintosh HD/Library/Audio/Plug-ins/VST3/
- AU folder: Macintosh HD/Library/Audio/Plug-ins/Components/
Summary
That’s the rundown on the free Nyx giveaway. A reverb that lets you build rooms in meters and has the tail follow your chords is a great pick for adding depth and harmony to your mixes at no cost.

