$45 Polyphonic Phase Modulation Synth

US 5-Pin MIDI compatibility and a free editor      19/04/24

What does $45 get you nowadays...?! We'll, it gets you a Polyphonic Phase Modulation Synth with 5-Pin MIDI and an Editor! Not bad - the MadLab Bleep-o-Tron Redux is a DIY Synth, which is a later iteration of the monophonic version released a few years ago. It's got 2 oscillators, with 6 phase modulation waveforms, 6 LFOs, 6 ADSRs, ring modulation, and some rudimentary effects! 

Amazing value, the specs are below:


  • polyphonic with 4 voices (4 notes can be played simultaneously)
  • 2 x oscillators (timbres) per voice
  • 8 x phase-modulation waveforms + combinations (36 in total)
  • white noise
  • 6 x ADSR (attack-decay-sustain-release) envelopes per voice
  • 6 x LFOs (low-frequency oscillators) per voice
  • 6 x LFO waveforms (sine, square, triangle, rising sawtooth, falling sawtooth, noise)
  • detuned oscillators by semitones or cents
  • connects to standard MIDI keyboards (velocity sensitive)
  • keyboard transpose (up to +/– 2 octaves)
  • keyboard split
  • pitch bend and modulation
  • ring modulator
  • oscillator synch
  • flanger (swept comb filter)
  • portamento (constant rate and constant time)
  • delay line (up to 150ms) with feedback and dry-wet mix
  • selectable MIDI channel #1 to #16 or all channels
  • 40 x preset patches
  • 24 x user patches (non-volatile)
  • master volume control
  • Windows desktop app Patch Editor

Check out the product page here: https://www.tindie.com/products/madlab/bleep-o-tron-redux-kit/


About the author [midierror]: midierror makes nifty Max For Live devices, innovative music hardware, award winning sample packs and hosts a podcast speaking to people in the music world.

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