Full Bucket Music FB3: a free Kawai K3 additive Synthesizer emulation is coming soon - July 26, 2026

Full Bucket Music FB3 is a new free Kawai K3 additive/wavetable Synthesizer plugin emulation for macOS and Windows: it’s coming soon.

German developer Björn Arlt has released a large number of beautiful free Synthesizer plugins in recent years. My favorites are the FB-9999 (Korg FB-8000) and Fury-68 (Korg Poly 61).

The latest Full Bucket Music development is the FB3, a new emulation of a famous hybrid Kawai Synthesizer.



Full Bucket Music FB3
FB3 is an authentic emulation of the Kawai K3 Synthesizer from 1986 for macOS and Windows. Important: the Full Bucket Music FB3 plugin is still beta and has not yet been officially released.

The original Kawai K3 was a hybrid additive/wavetable Synthesizer with analog filters and envelopes. The software version emulates these specifications.

Like the original hardware, it features two oscillators, each with the original 32 digital waveforms. It looks like the original feature where you can craft your own digital waveform with control over the harmonic content isn’t implemented here.

However, you can import additional waveforms into the plugin via a dedicated function on the user interface. You can adjust the oscillator wave, balance, and range. For oscillator 2, you also have dedicated fine and coarse control.

Then, a low-pass resonant filter and high-pass filter let you shape the sound instantly. Also onboard are two ADSR envelopes for the filter and amplifier. The first can also be inverted.

Extra movement is available via a shapeable LFO with a delay function that you can route to the VCF and VCA. Velocity and aftertouch are also onboard for both filter and amp.

The FB3 comes with the original sounds. Additionally, you can import Kawai K3 SysEx patches. Whether the plugin will also have an editor is still uncertain.

First Impression
We’ll soon be getting another great and free emulation from Full Bucket Music. Espen Kraft has already received a beta version for testing and comparison.

The plugin sounds very nice. In a direct comparison, you can still hear the hardware, in my opinion, but the level of authenticity is already high here. Looking forward to checking it out.

Full Bucket Music FB3 is available soon as a free download. It will run as a VST, VST3, AU, CLAP, and AAX plugin on macOS (native Apple Silicon + Intel) and Windows.

More information here: Full Bucket Music

Source: https://synthanatomy.com/2026/07/fu...-kawai-k3-additive-synthesizer-emulation.html

 

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