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:
TECH SPECS
- 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.