KV331 Audio Synthmaster One
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Manufacturer Information
KV331 Audio
https://www.kv331audio.com
info@kv331audio.com
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What SynthMaster One Is For
SynthMaster One is a virtual instrument dedicated to electronic music production and modern sound design. Thanks to its wavetable synthesis and versatile oscillators, it allows you to quickly create solid basses, cutting leads, evolving pads, plucks, and animated textures while remaining easy to use. It is suitable for beatmaking, film music, live performance, or studio composition, with a results-oriented approach.
With its 16-step arpeggiator sequencer and large preset library, SynthMaster One is also an excellent choice for quickly starting a track: load a sound, play, then refine with filters, envelopes, and effects to perfectly integrate it into your mix.
Main Features
Wavetable Synthesis and Import
SynthMaster One emphasizes true wavetable synthesis, ideal for obtaining rich, animated, and very contemporary timbres. You can import audio files containing wavetables and expand your sonic palette by adding your content to the software's Waveforms folder. The result: moving sounds, expressive harmonic sweeps, and evolving textures suited for modern productions.
Two Stereo Oscillators and Massive Unison
The engine revolves around 2 oscillators with stereo output, complemented by 2 sub oscillators to reinforce the low end. Each oscillator can have up to 16 voices of unison for wide pads and dense supersaws. Spread parameters (voice mix, detune curve and spread, pan spread, pitch spread, phase spread) allow precise sculpting of stereo width and sound thickness, from clean to aggressive.
The basic oscillators cover classic waveforms: sine, square, triangle, sawtooth, pulse, noise as well as single cycle waveforms. They also include 17 transformation algorithms divided into Spectral, Bend, Sync, Pulse, and Quantize families, enabling quick shifts from simple timbres to more complex sonic signatures.
Musical Filtering and Effective Modulation
SynthMaster One includes 2 filters with several models suited for electronic styles: Ladder (low 12, low 24, high 12, high 24, band pass, band stop), Diode Ladder (low pass 24), State Variable (low 12, high 12, band pass, band stop), and Bite (low 12, high 6). For animation, you have 4 ADSR envelopes and 2 LFOs, perfect for adding movement to wavetables, filters, pitch, or effects.
16-Step Arpeggiator Sequencer
The 16-step arpeggiator sequencer facilitates creating rhythmic patterns, ostinatos, and syncopated melodic lines. It's an effective tool for turning a simple chord into a groove or achieving patterns typical of EDM, synthwave, techno, pop, and electro styles.
Built-in Effects for Mix-Ready Sound
The effects section (a total of 11 processors) allows you to finalize the sound directly inside the instrument: saturation and distortion for impact, LoFi for grain, chorus and ensemble for thickness, phaser and tremolo for movement, delay and reverb for space, vocoder for vocal textures, compressor for dynamic control, and 6-band EQ to position the sound in the mix. This integrated chain speeds up workflow and avoids multiplying external plugins.
Cloud, Tunings, and Ergonomics
Cloud synchronization enables aligning your content across multiple machines and platforms: presets, waveforms, samples, favorites, and MIDI programs. This is especially convenient if you switch between studio and laptop computers. The software also offers enhanced microtuning functions, with keyboard mapping options (fill octave or consecutive), highlighted notes on the piano-style display, root note adjustment, and A4 reference frequency tuning. Finally, the interface features a white skin available in multiple sizes, resizable from 80 to 200 percent to suit your screen and comfort.
Technical specifications
| Type | Full software |
| Downloadable | Yes |
| Virtual instrument (plugin) | wavetable synthesizer |
| Operation | plugin and standalone application on Windows |
| Number of factory presets | 1,250 |
| Oscillators | 2 stereo oscillators |
| Sub oscillators | 2 |
| Unison | up to 16 voices per oscillator |
| Waveforms | sine, square, triangle, sawtooth, pulse, noise |
| Oscillator algorithms | 17 (Spectral, Bend, Sync, Pulse, Quantize categories) |
| Number of filters | 2 |
| Ladder | low 12, low 24, high 12, high 24, band pass, band stop |
| Diode Ladder | low pass 24 |
| State Variable | low 12, high 12, band pass, band stop |
| Bite | low 12, high 6 |
| Envelopes | 4 ADSR |
| LFOs | 2 |
| Arpeggiator sequencer | 16 steps |
| Number of effects | 11 |
| Cloud data synchronization | presets, waveforms, samples, favorites, MIDI programs |
| Microtuning | fill octave or consecutive mapping, highlighted scale notes, root note setting, A4 frequency adjustment |
| Resizable interface with white skin | 80 to 200 percent |
| Extended scale library | from 5-tone equal-tempered to alternative scales up to 12 tones |
| macOS | VST-2, AU, AAX |
| Windows | VST-2, AAX |
| iOS | AU |
Questions frequently asked
Does SynthMaster One allow importing wavetables?
It is possible to import audio files containing wavetables by adding them to the Waveforms folder of the software. This feature expands the palette of available timbres beyond the built-in waveforms.
How many presets are included in SynthMaster One?
The factory library includes 1,250 presets. It provides quick access to bass, lead, pad, pluck sounds and animated textures.
What unison options are available for wide sounds?
Each stereo oscillator can use up to 16 voices of unison. Detune, pan, tone, and phase have spread parameters to adjust the stereo width.
Does the SynthMaster One arpeggiator have a sequencer?
The arpeggiator sequencer operates on 16 steps to program rhythmic patterns and melodic lines. It can transform a played chord into a synced pattern.
What effects are integrated into the synthesizer?
The effects section includes 11 processors, including saturation, chorus, phaser, delay, reverb, vocoder, compressor, and a 6-band EQ. Four ADSR envelopes and two LFOs also allow modulation of the sound and effects.




