★ ★ Repro-5 is now in public beta.

To download the Repro-5 beta installer and read more about the release, please visit our forum.

At the end of the beta period, Repro-1 and Repro-5 will become Repro—one product, one installer, two synths. The price of Repro will remain at $99 until December 31, afterwards the final price will be $149 (plus applicable taxes).

If you purchase Repro-1 now, Repro-5 is for free. If you already own Repro-1, you can download and install the beta, your Repro-1 serial number will unlock Repro-5.

Repro-1 dives into the past for analogue inspiration, reverently modelling a classic synth. Every detail of the original was captured using component-level modelling technology to create the most authentic model possible. All the subtle characteristics and quirks found in the original are present in Repro-1.

Repro-1 is a fierce synth: hard working, raw sounding and immensely playable.

Repro-1 screenshots

ReSequenced Soundset

★ ★ New soundset for Repro-1 now available: ReSequenced. Sound designer and musician Electric Himalaya created 100 new presets for Repro-1. ReSequenced focuses on Repro-1's sequencer—packed with basslines, melodies and percussive loops.

Check out ReSequenced.

At first glance Repro-1 is simple and intuitive, but the clean and classic design hides a deep feature set capable of a wide range of sounds.

Key Features

  • authentic raw analogue sound
  • Component-level modelling of a classic monophonic synth
  • 2 oscillators: saw/pulse and saw/triangle/pulse, including combinations and pulse width modulation.
  • White noise generator
  • Mixer for the audio generators with feedback path for extra bass boost
  • Filter: 4-pole lowpass, capable of self-oscillation. Cutoff, Resonance, dedicated envelope and key tracking controls
  • Amplifier: ADSR envelope with curve trimmer
  • Modulation true to the original, plus an extra 2-slot matrix
  • LFO: saw/triangle/pulse, including combinations
  • Extra modulation sources: AR/ASR envelope adopted from the wavefolder effect, plus Trigger and Gate
  • Arpeggiator: up or up/down, latch mode
  • Sequencer: Two-patterns, step recording: Editable pitch/velocity, note/tie/pause status per step, max. 32-notes each pattern (or 64 notes when chained). Copy/paste and rotate functions, save/load presets
  • 5 built-in effects: wavefolder/distortion, delay/chorus, EQ/resonator, reverb, sonic conditioner/dynamics processor
  • 500 factory presets

The sound of Repro

Repro-1 Demo Song

Using only Repro-1, Urs creates a short piece reminiscent of 1980s electronica (Berlin / Düsseldorf crossover).


Swelling layers and bubbling accents drive this tech house piece from Oddvar. All sounds by Repro-1 except the drums.

The Big Reveal

The Unshushable Coktor channels some 80s vibes for his Repro-1 track. All sounds by Repro-1 except the drums/percussion.



A pulsing dance oriented track from Ned Bouhalassa. All sounds from Repro-1 except the drum loops.


Ned Bouhalassa creates a dramatic synth track using only Repro-1.



Repro in action

Dan Worrall introduces Repro-1 with a four part video series.

A fun video we created to celebrate the release of Repro-1

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