Eurorack + Modular Synths

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  1. Expert Sleepers ES-9
    Expert Sleepers ES-9 Eurorack Audio + CV Interface 16hp
    $635.00

    In Stock Available immediately!
  2. Expert Sleepers Super Disting EX Plus Alpha
    Expert Sleepers Super Disting EX Plus Alpha 8hp
    $399.00

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  3. ES-8 USB Audio Interface
    Expert Sleepers ES-8 USB Audio Interface 8hp
    $459.00

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  4. ES-8 USB Audio Interface (Bitwig Edition)
    Expert Sleepers ES-8 USB Audio Interface (Bitwig Edition) 8hp
    $459.00

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  5. Expert Sleepers FH-2, front view
    Expert Sleepers FH-2 Factotum USB MIDI Host + MIDI-CV 8hp
    $309.00

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  6. Disting MK4 Multifunction Module
    Expert Sleepers Disting MK4 Multifunction Module 4hp
    $195.00

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  7. ES-3 MK4 Lightpipe to CV Interface
    Expert Sleepers ES-3 MK4 Lightpipe to CV Interface 8hp
    $209.00

    In Stock Available immediately!
  8. Klavis Twin Waves MkII Dual Digital Oscillator
    Klavis Twin Waves MkII Dual Digital Oscillator 8hp
    As low as $282.00
    Multiple Options Make a selection for stock info
  9. Expert Sleepers FHX-8CV FH-2 Factotum Expander
    Expert Sleepers FHX-8CV FH-2 Expander 4hp
    $145.00

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  10. Expert Sleepers Otterley Multi-LFO
    Expert Sleepers Otterley Multi-LFO 8hp
    • NEW
    $199.00

    Preorder New release—reserve yours today!
  11. Expert Sleepers Little Mikey Preamp
    Expert Sleepers Little Mikey Preamp 8hp
    $175.00

    In Stock Available immediately!
  12. ES-5 mk3 Expander for ES-3
    Expert Sleepers ES-5 mk3 Expander for ES-3 4hp
    $125.00

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  13. Klavis Grainity Analog Granular VCF
    Klavis Grainity Analog Granular VCF 10hp
    As low as $324.00
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  14. Klavis CalTrans Calibrator + Transposer
    Klavis CalTrans Calibrator + Transposer 6hp
    $198.00

    In Stock Available immediately!
  15. Expert Sleepers Lorelei Oscillator
    Expert Sleepers Lorelei Analog Oscillator 8hp
    $189.00

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  16. ES-6 mk3 CV to Lightpipe Interface
    Expert Sleepers ES-6 mk3 CV to Lightpipe Interface 4hp
    $160.00

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  17. Expert Sleepers Tiny MIDI Breakout Expander
    Expert Sleepers Tiny MIDI Breakout Expander 2hp
    $55.00

    In Stock Available immediately!
  18. Expert Sleepers MIDI Breakout Expander
    Expert Sleepers MIDI Breakout Expander 4hp
    $50.00

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  19. Expert Sleepers Pandora
    Expert Sleepers Pandora Analog Bandpass Filter + Distortion 8hp
    $199.00

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  20. Klavis Quadigy Quad Envelope
    Klavis Quadigy Quad Envelope 14hp
    As low as $324.00
    Multiple Options Make a selection for stock info
  21. Expert Sleepers CVM-8
    Expert Sleepers CVM-8 CV to MIDI + I2C Converter 4hp
    $225.00

    In Stock Available immediately!
  22. Expert Sleepers FHX-8GT Gate Expander for FH-2 Factotum
    Expert Sleepers FHX-8GT Gate Expander for FH-2 4hp
    $99.00

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  23. Expert Sleepers Persephone Analog JFET VCA
    Expert Sleepers Persephone Analog JFET VCA 8hp
    $189.00

    In Stock Available immediately!
  24. Klavis Two Bits Dual-Channel Logic
    Klavis Two Bits Dual-Channel Logic 5hp
    $156.00

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  25. ESX-8CV Mk2 Expansion
    Expert Sleepers ESX-8CV Mk2 Expansion 4hp
    $175.00

    In Stock Available immediately!
  26. Expert Sleepers ES-7 mk2
    Expert Sleepers ES-7 CV Input Expander 4hp
    $99.00

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  27. Expert Sleepers ESX-8GT mk3 Gate Expansion front view
    Expert Sleepers ESX-8GT mk3 Gate Expansion 4hp
    $75.00

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  28. ESX-8MD MIDI & DINsync Expansion
    Expert Sleepers ESX-8MD MIDI & DINsync Expansion 10hp
    $160.00

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  29. Expert Sleepers Cicely Octave Fuzz
    Expert Sleepers Cicely Octave Fuzz 8hp
    $189.00

    In Stock Available immediately!
  30. Noise Lab Prime Mover Analog VCO
    Noise Lab Prime Mover Analog VCO 16hp
    $375.00

    In Stock Available immediately!
  31. Expert Sleepers Amelia ADBR Envelope Generator
    Expert Sleepers Amelia Analog ADBR Envelope Generator 8hp
    $185.00

    In Stock Available immediately!
  32. Klavis Tweakers Dual CV Processor
    Klavis Tweakers Dual CV Processor 3hp
    As low as $82.00
    Multiple Options Make a selection for stock info
  33. Tonic Sequencer
    Rebel Technology Tonic Sequencer 6hp
    $160.00

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  34. Klavis Mixwitch Mixer Switcher Eurorack Module
    Klavis Mixwitch Mixer + Switch 8hp
    $156.00

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  35. Expert Sleepers Aloysius
    Expert Sleepers Aloysius AHDW Envelope Generator 8hp
    $185.00

    In Stock Available immediately!
  36. Klavis Flexshaper
    Klavis Flexshaper Tracking Generator + Waveshaper 6hp
    $156.00

    In Stock Available immediately!
  37. Stoicheia Dual Euclidean Sequencer
    Rebel Technology Stoicheia Dual Euclidean Sequencer 10hp
    $220.00

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  38. Logica XT Gater Logic Module
    Klavis Logica XT Gater Logic Module 5hp
    $145.00

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  39. Expert Sleepers Ivo Low Pass Filter
    Expert Sleepers Ivo Analog Low Pass Filter 8hp
    $189.00

    In Stock Available immediately!
  40. Rebel Technology CLK Tripartite Synchronized Clock Generator module, front view
    Rebel Technology CLK Tripartite Synchronized Clock Generator 4hp
    $118.00

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  41. Chronos MK II
    Rebel Technology Chronos MK II 6hp
    $175.00

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  42. General CV MIDI-Based Sound Source
    Expert Sleepers General CV MIDI-Based Sound Source 12hp
    • STAFF PICK
    $349.00

    In Stock Available immediately!
  43. Klasmata Sequencer
    Rebel Technology Klasmata Sequencer 8hp
    $265.00

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  44. Logoi Clock Divider / Counter / Delay
    Rebel Technology Logoi Clock Divider / Counter / Delay 10hp
    $265.00

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  45. Phoreo Triple Function Processor
    Rebel Technology Phoreo Triple Function Processor 10hp
    $220.00

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  46. Klavis 2x4 Multiple
    Klavis 2x4 Multiple 3hp
    $34.00

    In Stock Available immediately!
  47. Expert Sleepers Beatrix Phaser
    Expert Sleepers Beatrix Analog Phaser 8hp
    $189.00

    In Stock Available immediately!

1-48 of 58 items

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Modular synths are one of the most inspiring tools available to electronic musicians today: synthesizers that you can assemble yourself from core components, building an instrument specifically meant for your music and your workflow. These core components, called modules, each perform an individual function. Some generate sound, some process sound, and some provide a way to control other modules.

At Perfect Circuit we specialize in the Eurorack format of modular synthesizers, a standard developed by Dieter Doepfer in order to provide musicians easy and affordable access to the techniques from the large analog synths of yesteryear: Moog, Buchla, ARP, and Serge systems, and many more. Since then, Eurorack has grown considerably—now offering a wide range of unique sonic opportunities.

Now, manufacturers like Verbos Electronics and Random*Source focus on adapting classic analog designs for use in modern music. Others, like Noise Engineering, Industrial Music Electronics, or Mutable Instruments, work in the digital realm to bring new techniques to the world of hardware. Others like Rossum Electro-Music and Make Noise work in both domains to make instruments that strike an uncanny balance between analog and digital, opening new worlds of expression.

Through some combination of these modules, a mess of patch cables, and a healthy does of experimentation, many musicians have found their own unique voices: and perhaps you will find yours there, too.