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

    In Stock Available immediately!
  3. ES-8 USB Audio Interface
    Expert Sleepers ES-8 USB Audio Interface 8hp
    $459.00

    In Stock Available immediately!
  4. Expert Sleepers FH-2, front view
    Expert Sleepers FH-2 Factotum USB MIDI Host + MIDI-CV 8hp
    $309.00

    In Stock Available immediately!
  5. ES-3 MK4 Lightpipe to CV Interface
    Expert Sleepers ES-3 MK4 Lightpipe to CV Interface 8hp
    $209.00

    In Stock Available immediately!
  6. Disting MK4 Multifunction Module
    Expert Sleepers Disting MK4 Multifunction Module 4hp
    $195.00

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  7. Expert Sleepers FHX-8CV FH-2 Factotum Expander
    Expert Sleepers FHX-8CV FH-2 Expander 4hp
    $145.00

    In Stock Available immediately!
  8. Expert Sleepers Otterley Multi-LFO
    Expert Sleepers Otterley Multi-LFO 8hp
    • NEW
    $199.00

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  9. Expert Sleepers Little Mikey Preamp
    Expert Sleepers Little Mikey Preamp 8hp
    $175.00

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

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  11. Expert Sleepers Lorelei Oscillator
    Expert Sleepers Lorelei Analog Oscillator 8hp
    $189.00

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

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

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  14. Expert Sleepers MIDI Breakout Expander
    Expert Sleepers MIDI Breakout Expander 4hp
    $50.00

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

    In Stock Available immediately!
  16. Expert Sleepers CVM-8
    Expert Sleepers CVM-8 CV to MIDI + I2C Converter 4hp
    $225.00

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

    In Stock Available immediately!
  18. 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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  19. Expert Sleepers Persephone Analog JFET VCA
    Expert Sleepers Persephone Analog JFET VCA 8hp
    $189.00

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

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

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

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  23. Noise Lab Prime Mover Analog VCO
    Noise Lab Prime Mover Analog VCO 16hp
    $375.00

    In Stock Available immediately!
  24. Expert Sleepers Cicely Octave Fuzz
    Expert Sleepers Cicely Octave Fuzz 8hp
    $189.00

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

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  26. Expert Sleepers Amelia ADBR Envelope Generator
    Expert Sleepers Amelia Analog ADBR Envelope Generator 8hp
    $185.00

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

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

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

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  30. Expert Sleepers TOS-15 ADAT Patch Cable - 15cm
    Expert Sleepers TOS-15 ADAT Patch Cable - 15cm
    $6.99

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  31. ES-40 SPDIF Interface
    Expert Sleepers ES-40 SPDIF Interface 6hp
    $125.00

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  32. Sonicsmith MIDVertor E1 (Silver + Black)
    Sonicsmith MIDVertor E1 MIDI Expander for ConVertor E1 (Silver + Black) 6hp
    $290.00

    Preorder New release—reserve yours today!
  33. Sonicsmith E1 Duo Pack (Silver + Black)
    Sonicsmith E1 Duo Pack Audio Controlled Synthesizer (Silver + Black) 12hp
    $640.00

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  34. Save $15 Expert Sleepers Persephone Analog JFET VCA
    Expert Sleepers Persephone Analog JFET VCA 8hp
    • DEMO
    • Sale
    $189.00 $174.00
    In Stock Available immediately!
  35. Save $25 Expert Sleepers Amelia ADBR Envelope Generator
    Expert Sleepers Amelia Analog ADBR Envelope Generator 8hp
    • DEMO
    • Sale
    $185.00 $160.00
    In Stock Available immediately!
  36. Save $50 Expert Sleepers General CV
    Expert Sleepers General CV MIDI-Based Sound Source 12hp
    • DEMO
    • Sale
    $349.00 $299.00
    In Stock Available immediately!
  37. Expert Sleepers General CV MIDI-Based Sound Source [USED]
    Expert Sleepers General CV MIDI-Based Sound Source 12hp
    • USED
    $299.00

    In Stock Available immediately!
  38. Expert Sleepers General CV MIDI-Based Sound Source [USED]
    Expert Sleepers General CV MIDI-Based Sound Source 12hp
    • USED
    $299.00

    In Stock Available immediately!

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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.