Ultiverb
by Libelula Audio · Reverb · Free reverb
Not rated yet
Free reverb plugin from Libelula Audio, released in September 2026.
Best for: Vocals, Keys & Synths, Guitars. Genres: all genres.
Keywords: ducking, free, mixing, vocals, room, spring, algorithmic, hall, oversampling, plate, sidechain input, sound design.
What it does
Ultiverb is a free algorithmic reverb from Libelula Audio with five algorithms and a large set of shaping tools.
- Algorithms: Room, Hall, Plate, Spring and Digital, plus four Flavor settings (Odonata, Anisoptera, Meganeura, Clean).
- Shaping: decay from 0.2 to 20 seconds, frequency-dependent decay, Bloom to preserve transients, and Fluctuate modes for stereo variation.
- Modulation and dynamics: LFO modulation of the tail, and ducking with sidechain support.
- EQ and drive: two four-band EQs (pre and post) and saturation on the dry and wet signals.
- Quality: up to 16x oversampling; 21 presets in version 1.1.0.
Source: Libelula Audio product page
When to use it
Ultiverb packs a lot into a free reverb: it covers rooms to springs and gives more control than most free options. It doesn't have the reputation of Valhalla VintageVerb or FabFilter Pro-R 2, but it costs nothing.
- Best for: general mixing reverb, ducked vocal reverbs and sound design.
Where to buy
- Bedroom Producers Blog: Free
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