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ModularGrid is a database and planner for modular synthesizers

Frac Rack is one of the smaller sized formats supported by Blacet and Paia with an active DIY scene.

Show me the Frac modules

There are 397 Frac modules to choose from. Users build 1176 Racks in this universe.

Forum latest Posts

Gentle crackles, wind-like swooshes, ... Hi everyone, I’m relatively new to the world of modular … by in Racks
Poor Man's 2500 Getting this out of the way, yeah, Behringer. I know. I fee… by in Racks
would befaco Oneiroi make sense in my... why not? its self contained but it will play nice with what… by in Racks
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News from the Labs

BitByBit Synths WaveBoy
4 Aug 2025 BitByBit Synths
0.58 Firmware Released! This version adds a free-running LFO, a Sampler-rate reducer and removes the 64kb sample limits, among other features. 
Scrapcode Modular X
4 Aug 2025 Scrapcode Modular

X

SQUEEEEEZZZZE! X - Compact Multiple crams as much passive mult as we think is possible into 4HP, with extensive normalling options allowing it to be a single 1x12, two 1x6s, four 1x3s or a combination of the above. 10% off new module discount during August only at: https://www.scrapcode.co.uk 
Entineering FM Playground
4 Aug 2025 Entineering
Still unsure about FM Playground? Check out this cool video: www.youtube.com/watch?v=afGdWfix_-Q. You can now also get the module (and the rest of the Entineering lineup) on www.perfectcircuit.com! Also one discounted B-stock module is currently available on https://shop.entineering.eu (only while supply lasts). 
Fully Wired Electronics Simple Triple Mixer
Until August 7th, you can save 25% on the Simple Triple Mixer, Simple Voltage Controlled Oscillator, and Transistor Ladder Filter. If you want to create a synth voice inspired by the iconic synths of the 70's, then now it the time to do so! www.fullywiredelectronics.com/store  
Bananalogue VCFQ
1 Aug 2025 Bananalogue
Bananalogue VCFQ multimode filter is now available.  
subMatrix BeetTweek
23 Jul 2025 subMatrix
BeetTweeks Now in Stock! 
Older News →

Top Modules rated by users

  1. STG Soundlabs Mankato Filter Ø 5.00 (4)
  2. BugBrand PT Delay Standard 2015 Ø 5.00 (3)
  3. Blacet Dual Linear VCA Ø 5.00 (3)
  4. Blacet I/O Ø 5.00 (3)
  5. BugBrand PRC5 Ø 5.00 (2)
  6. BugBrand DD1 Ø 5.00 (2)
  7. Bananalogue Serge WVX Ø 5.00 (2)
  8. Synthesis Technology MOTM 1490 Moog Ladder VCF Ø 5.00 (2)
  9. BugBrand SYN2A Ø 5.00 (2)
  10. Metalbox Divider & Logic Ø 5.00 (2)
  11. Metalbox VC Divider Ø 5.00 (2)
  12. BugBrand SYN2B Ø 5.00 (2)
  13. BugBrand PRC2B Ø 5.00 (2)
  14. Blacet Super VCA Ø 5.00 (2)
  15. Cynthia Zeroscillator Ø 5.00 (2)
  16. Blacet F355 Morphing Dual LFO Ø 5.00 (2)
  17. Metalbox Matrix Mixer Ø 5.00 (2)
  18. BugBrand CTL1 Ø 5.00 (2)
  19. Metalbox Wave Multiplier Ø 5.00 (2)
  20. BugBrand PRC3A Ø 5.00 (2)
  21. Livewire Electronics FrequenSteiner Ø 5.00 (2)
  22. BugBrand SEQ2A Ø 5.00 (2)
  23. Synthesis Technology MOTM 1800 Looping ADSR Ø 5.00 (2)
  24. Blacet Klangwerk Ø 5.00 (2)
  25. Metalbox Burst Generator Ø 5.00 (2)

Modules have to be rated at least 2 times to appear in this list. Any module with a rating better than Ø 4.34 is considered to be above average.

Show the Top 100 evaluation lists

Popular Modules in racks

  1. BugBrand Frequency Shifter in 36 Racks

The list of Popular Modules is generated from Modules that have been added to Racks AND have been released in the specified time period.

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