Instruments · Wavetable synth
Seroma
Morph. Stack. Move.
A wavetable synth with 120 presets of its own.

Two wavetable oscillators over twelve tables, each with up to sixteen unison voices and a warp mode, a sub, noise, a filter with combs, three envelopes, four LFOs, a sixteen slot matrix, four macros and seven effects. Drag an envelope, LFO or macro onto any knob to modulate it.
- Two wavetable oscillators, twelve tables
- Unison up to 16 voices with warp modes
- Filter with 12 and 24 dB slopes, notch and combs
- Three envelopes, four LFOs, sixteen matrix slots
- Seven effects and four macros
Oscillators
Watch the wave change shape.
Each oscillator draws its table as a stack of frames and shows where it is playing as you move the position, by hand or from an envelope or LFO.

- Twelve tables, sixty four frames each
- Sync, bend, mirror, PWM and FM warps
- Unison with detune, blend and width
Modulation
Drag it onto a knob.
Drag an envelope, an LFO or a macro onto any knob and it is in the matrix. Sixteen slots, each with its amount and polarity, and coloured arcs on the knobs show what moves.
- Three envelopes, four LFOs
- Velocity, note, wheel, aftertouch and random
- Sixteen slots

Effects
Finish the sound inside the synth.
Distortion, compressor, EQ, chorus, phaser, a delay in time with the song and a reverb, each with its own mix.

- Seven effects
- Delay in time with the song
Seroma
Preset categories
- Bass
- Lead
- Pad
- Pluck
- Keys
- Arp and sequence
- FX
- Atmos
- Afro House
- Feelings
- Dimensions
What you need
Windows
- Operating system
- Windows 10 or 11, 64 bit
- Processor
- Intel or AMD, 64 bit
- Memory
- 8 GB, 16 GB for big projects
- Audio
- ASIO or Windows audio
- Plugins
- The Listn plugins, plus your VST3
macOS
- Operating system
- A recent macOS
- Processor
- Apple silicon or Intel
- Memory
- 8 GB, 16 GB for big projects
- Audio
- Core Audio
- Plugins
- The Listn plugins, plus your VST3 and AU
Comes with Listn Studio
Put it onyour track.
Download Listn Studio, open the mixer and it is in the insert list. Every module and every setting, nothing extra to unlock.
- 1
Download
Get Listn Studio for Windows or Mac and sign in.
- 2
Open the mixer
Press + in an insert slot and pick it under Listn effects.
- 3
Make it yours
Save your settings as a preset and learn its knobs on your controller.
Listn Studio
Full license, every plugin
- Every Listn plugin, the ones coming too
- Windows and Mac on your own computers
- Your VST3 and AU plugins beside them
- MIDI learn on every knob
- Updates to this version
Instruments
Also in the bundle
Listn Drums Drum machine Listn Synth Synthesizer Listn Sampler SamplerQuestions
Before you ask.
Where do I find it?
Make an instrument track and pick Seroma, or drag it from the browser under Listn instruments.
Can I save my own sounds?
Yes. Save keeps them in Documents, Listn Studio, Seroma.
How many voices?
Up to sixteen notes at once, each with up to sixteen unison voices per oscillator.
Do I pay for the plugins?
No. Every Listn plugin comes with Listn Studio, and the ones still coming arrive as free updates to this version.
Do they work in other DAWs?
The Listn plugins run inside Listn Studio. Your own VST3 and AU plugins run beside them.
Can I control them from a MIDI controller?
Yes. Right click any knob and choose Learn, then move a control on your keyboard, pads or mixer.
How many computers?
Your license works on your own computers, Windows and Mac.
Where do I get help?
Write to us from the Contact page, or use Help, Report a bug or an idea in Listn Studio.