Dead Duck Reducktion is a 32-voice polyphonic software synthesizer for use in audio hosts that support the VST 2.4 plugin format. It available for Windows operating systems in both 32-bit and 64-bit versions.

Features:

• Three multi-mode oscillators:
  • Wave: continuously variable between saw, square, triangle and sine waveforms.
  • Pulse: pulse wave with variable width from 0 to 100%.
  • FM: sine wave FM with carrier and two modulators.
• Full stereo output with oscillator pan and stereo noise options.
• Up to 8-voice unison detune with mix and stereo spread controls.
• Two resonant filters:
  • 24 dB/oct low pass with self-oscillation.
  • 12 db/oct low pass, high pass, band pass, band stop and peaking.
• Three ADSR envelopes.
• Three flexible LFOs:
  • Triangle, sine, square, saw and random outputs.
  • Tempo-sync, free-running, phase and attack time.
• A 12-slot modulation matrix.
• Built in drive, EQ, chorus, delay and reverb effects.
• 16-step arpeggiator/sequencer:
  • Up, down and up/down arpeggiator modes.
  • Sequencer-controlled note, velocity and note length.
  • Variable step count and tempo-based step times from 1/32T to 1/1D.
  • Two modulation sources with stepped or smoothed output options.
• MIDI learn for easy assignment of hardware controllers.
• File-based preset system for easy management and sharing.
• Resizeable user interface with 100%, 150% and 200% scaling options.
• User-definable themes for easy customisation.

Code:

https://www.kvraudio.com/product/reducktion-by-dead-duck-software

 

This one is very very good ! I voted for it at the kvr challenge.
A great upgrade to Deducktion The effects are better, we get one more OSC and a step sequencer !
as good as some commercial synths...

 

A demo that confirm Reducktion is a great synth !

 

The Sonic Sirius Soundset for the Dead Duck Software - Reducktion VSTi

 

2 Great Demos

This free VSTi is really underrated and deserves more attention.
I'll use it a lot