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Eurorack Buchla Frac Modcan A MOTM MU Serge 500 Series AE Modular Pedals

The 500 Series is not a modular synthesizer format but a modular audio processing stack and was originally developed by API.

Show me the 500 Series modules

There are 662 500 Series modules to choose from. Users build 4447 Racks in this universe.

Forum latest Posts

Drum Machine concept @wishbonebrewery thanks for the suggestion. I'm using Ghost… Today, 14:53 by megoth in Racks

Warmth of the Sun Had a listen last night, good stuff. -- wishbonebrewery … Today, 14:00 by Pioneer123 in You

Cheap Kalimba Sound Exploration Cheers, i could certainly play for hours. I'm going to traw… Today, 12:07 by wishbonebrewery in You

MY FIRST FX RACK IDEA Hey there, during the past years i had a lot of fun with… Today, 10:38 by Technoir-on-Pico in Racks

Hey, The Admins, a suggestion. ... Gotcha. Insomnia again and just caught this reply. Goodb… Today, 08:56 by singular_sound in ModularGrid

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News from the Labs

13 Apr 2025 Erd

ERD/TOAD

I am delighted to announce the long awaited release of the final batch of ERD/TOAD with the first three modules in the ERD/geomantic toolkit (amissio, acquisitio and conjunctio).

12 Apr 2025 BitByBit Synths

The latest WaveBoy PCB revision (1.4) arrived and it looks like this one will be the production design!

12 Apr 2025 Alfa Delta

Visit the Morphor boot at Synthfest France, they have Dionisi on demo.

11 Apr 2025 Intellijel

Multigrain

Intellijel Multigrain - Stereo Morphing Granular Sampler https://www.youtube.com/watch?v=SqzpPOVFghE

11 Apr 2025 Joranalogue Audio Design

Will it music? It sure will! Making a track from scratch using one module (and a little bit of modulation support) is a challenge which Matths from Sonicstate couldn't pass up. Watch the full process now: https://youtu.be/iwcrqFqGoO0

10 Apr 2025 Clatters

EXP-FX

FX v1.1 is out! The firmware update is now available on our Sibilla Web Programmer and GitHub page! We managed to improve the V/oct tracking of the internal sub-oscillator, increased the full wet volume of the module and gave you more control over the frozen buffer with more pitch-shifting and stereophony capabilities. https://clattersmachines.com/

Older News →

Top Modules rated by users

API 550A Ø 5.00 (4)
Elysia Nvelope 500 Ø 5.00 (4)
Smart Research C1LA Ø 5.00 (3)
Classic API VP28 Ø 5.00 (3)
Solid State Logic ULTRAVIOLET Stereo Equaliser Ø 5.00 (3)
Serpent SB4001 Ø 5.00 (3)
Louder Than Liftoff Chroma Ø 5.00 (2)
WES Audio Rhea Ø 5.00 (2)
Shadow Hills Dual Vandergraph Ø 5.00 (2)
Rupert Neve Designs 535 Ø 5.00 (2)
IGS Audio S-Type 500 Ø 5.00 (2)
Louder Than Liftoff Chop Shop Void Corp Edition Ø 5.00 (2)
FMR Audio RNC 500 Ø 5.00 (2)
Kush Audio Electra Ø 5.00 (2)
Pete’s Place Electrodyne 501 Ø 5.00 (2)
Elysia Xfilter 500 Ø 4.75 (4)
DIYRE Colour Palette MK2 Ø 4.67 (3)
Elysia Xpressor 500 Ø 4.60 (5)
Elysia Karacter 500 Ø 4.50 (4)
Sound Skulptor MP573 Ø 4.50 (2)
Kush Audio Electra 500 Ø 4.50 (2)
API 512c Ø 4.50 (2)
Trident Audio Developments 80B 500 Series EQ Ø 4.50 (2)

Modules have to be rated at least 2 times to appear in this list. Any module with a rating better than Ø 4.35 is considered to be above average.

Show the Top 100 evaluation lists