Eurorack + Modular Synths

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  1. Save $20 ES-5 mk3 Expander for ES-3
    Expert Sleepers ES-5 mk3 Expander for ES-3 4hp
    • Sale
    $125.00 $105.00
    In Stock Available immediately!
  2. Save $45 Erica Synths Bassline Module (Black)
    Erica Synths Bassline Synth Voice 14hp
    • Sale
    $349.00 $304.00
    In Stock Available immediately!
  3. 13% off Qu-Bit Surface Physical Modeling Voice
    Qu-Bit Electronix Surface Physical Modeling Voice 10hp
    • Sale
    As low as $304.00
    Multiple Options Make a selection for stock info
  4. 12% off Expert Sleepers Tiny MIDI Breakout Expander
    Expert Sleepers Tiny MIDI Breakout Expander 2hp
    • Sale
    $55.00 $48.13
    In Stock Available immediately!
  5. Save $25 ESX-8CV Mk2 Expansion
    Expert Sleepers ESX-8CV Mk2 Expansion 4hp
    • Sale
    $175.00 $150.00
    In Stock Available immediately!
  6. Roland System-500 510 module, front view
    Roland SYS-510 Synthesizer Voice 20hp
    $429.99

    Backorder Reserve your order today!

    Out of Stock

    We're awaiting our next batch of this item. Pre-order to reserve your place in line and we'll fulfill your order as soon as we receive our shipment
  7. Expert Sleepers ES-7 mk2
    Expert Sleepers ES-7 CV Input Expander 4hp
    $99.00

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    Out of Stock

    We're awaiting our next batch of this item. Pre-order to reserve your place in line and we'll fulfill your order as soon as we receive our shipment
  8. 12% off Expert Sleepers ESX-8GT mk3 Gate Expansion front view
    Expert Sleepers ESX-8GT mk3 Gate Expansion 4hp
    • Sale
    $75.00 $65.63
    In Stock Available immediately!
  9. Expert Sleepers CVM-8
    Expert Sleepers CVM-8 CV to MIDI + I2C Converter 4hp
    $225.00

    In Stock Available immediately!
  10. 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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  11. ESX-8MD MIDI & DINsync Expansion
    Expert Sleepers ESX-8MD MIDI & DINsync Expansion 10hp
    $160.00

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

    In Stock Available immediately!
  13. Expert Sleepers FHX-8CV FH-2 Factotum Expander
    Expert Sleepers FHX-8CV FH-2 Expander 4hp
    $145.00

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    Out of Stock

    We're awaiting our next batch of this item. Pre-order to reserve your place in line and we'll fulfill your order as soon as we receive our shipment
  14. Erica Synths Black VCF Coupler
    Erica Synths Black VCF Coupler 8hp
    $109.00

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    Out of Stock

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  15. 15% off Plum Audio ex6 Expander 1U
    Plum Audio ex6 Expander 1U 6hp
    • Sale
    As low as $24.65
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  16. Save $50 Qu-Bit QuBit Electronix Scanned Synthesis Wavetable VCO Eurorack Module
    Qu-Bit Electronix Scanned Organic Wavetable VCO 16hp
    • Sale
    $399.00 $349.00
    In Stock Available immediately!
  17. Save $45 Weston Audio B2 Kick Drum + Bass Voice
    Weston Precision Audio B2 Kick Drum + Bass Voice 14hp
    • Sale
    $295.00 $250.00
    In Stock Available immediately!
  18. Save $100 Erica Synths Pico System III - Eurorack
    Erica Synths Pico System III - Eurorack 42hp
    • Sale
    $489.00 $389.00
    In Stock Available immediately!
  19. 15% off Erica Synths Logo T-Shirt
    Erica Synths Logo T-Shirt
    • Sale
    As low as $16.99
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  20. 30% off Plum Audio ex2 Expander 3U
    Plum Audio ex2 Expander 3U 2hp
    • Sale
    As low as $48.30
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  21. ES-40 SPDIF Interface
    Expert Sleepers ES-40 SPDIF Interface 6hp
    $125.00

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    We're awaiting our next batch of this item. Pre-order to reserve your place in line and we'll fulfill your order as soon as we receive our shipment
  22. General CV MIDI-Based Sound Source
    Expert Sleepers General CV MIDI-Based Sound Source 12hp
    • STAFF PICK
    $349.00

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    We're awaiting our next batch of this item. Pre-order to reserve your place in line and we'll fulfill your order as soon as we receive our shipment
  23. Plum Audio ex12 Expander 1U
    Plum Audio ex12 Expander 1U 12hp
    As low as $69.00
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  24. Dnipro Modular Ewa Expander for Krait
    Dnipro Modular Ewa Expander for Krait 4hp
    $139.99

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    We're awaiting our next batch of this item. Pre-order to reserve your place in line and we'll fulfill your order as soon as we receive our shipment
  25. Pico Voice
    Erica Synths Pico Voice 3hp
    $149.00

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    We're awaiting our next batch of this item. Pre-order to reserve your place in line and we'll fulfill your order as soon as we receive our shipment
  26. Sonicsmith MIDVertor E1 (Silver + Black)
    Sonicsmith MIDVertor E1 MIDI Expander for ConVertor E1 (Silver + Black) 6hp
    $290.00

    Preorder New release—reserve yours today!

    Preorder

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  27. Qu-Bit Electronix Surface Physical Modeling Voice [USED]
    Qu-Bit Electronix Surface Physical Modeling Voice 10hp
    • USED
    $259.00

    In Stock Available immediately!
  28. Qu-Bit Electronix Surface Physical Modeling Voice [USED]
    Qu-Bit Electronix Surface Physical Modeling Voice 10hp
    • USED
    $259.00

    In Stock Available immediately!
  29. Qu-Bit Electronix Surface Physical Modeling Voice [USED]
    Qu-Bit Electronix Surface Physical Modeling Voice 10hp
    • USED
    $259.00

    In Stock Available immediately!
  30. 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!
  31. 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!
  32. Erica Synths Pico System III - Eurorack [USED]
    Erica Synths Pico System III - Eurorack 42hp
    • USED
    $419.00

    In Stock Available immediately!
  33. Erica Synths Black VC EG Expander [USED]
    Erica Synths Black VC EG Expander 5hp
    • USED
    $99.99

    In Stock Available immediately!
  34. Erica Synths Pico System III - Eurorack [USED]
    Erica Synths Pico System III - Eurorack 42hp
    • USED
    $419.00

    In Stock Available immediately!
  35. Expert Sleepers CVM-8 CV to MIDI + I2C Converter [USED]
    Expert Sleepers CVM-8 CV to MIDI + I2C Converter 4hp
    • USED
    $189.00

    In Stock Available immediately!
  36. Qu-Bit Electronix Surface Physical Modeling Voice [USED]
    Qu-Bit Electronix Surface Physical Modeling Voice 10hp
    • USED
    $259.00

    In Stock Available immediately!
  37. Erica Synths Black VCF Coupler [USED]
    Erica Synths Black VCF Coupler 8hp
    • USED
    $89.99

    In Stock Available immediately!
  38. Expert Sleepers ES-40 SPDIF Interface [USED]
    Expert Sleepers ES-40 SPDIF Interface 6hp
    • USED
    $109.00

    In Stock Available immediately!
  39. Qu-Bit Electronix Scanned Organic Wavetable VCO [USED]
    Qu-Bit Electronix Scanned Organic Wavetable VCO 16hp
    • USED
    $309.00

    In Stock Available immediately!

1-39 of 39 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.