Timing
Clock and sequencing decide when events happen.
Modular without the mystery
You do not need an engineering background to build a modular instrument. Start with the signal path, learn one role at a time, and buy only what your music needs.
Interactive patch labs
Connect virtual modules, hear each signal job, earn mastery XP, and carry the matching functions directly into My Rack. No software installation required.
Beginner gear guide
These recommendations are educational starting points. Compare system function, compatibility, and total setup cost before choosing a retailer.
The five-job framework
Clock and sequencing decide when events happen.
A voice or oscillator creates the raw audio signal.
Envelopes and LFOs change parameters over time.
VCAs, attenuators, and mixers manage signal strength.
A safe path carries the finished sound to your studio.
Core lessons
Eurorack is a shared physical and electrical format that lets modules from many manufacturers live in one powered case. Each module handles one or more jobs, and patch cables let you decide how those jobs connect.
Remember: a module cannot operate by itself. It requires a compatible powered case.
Audio is the signal you hear. Control voltage—or CV—moves a parameter. A gate is an on/off instruction. Clock is a repeating pulse that keeps events synchronized.
Inputs receive signals; outputs send them. Unless a manufacturer explicitly permits it, never connect an output to another output.
A VCA is an automatic level control. It can shape the loudness of a note or control the strength of modulation. Mixers combine signals, attenuators reduce them, and multiples distribute them. These quiet utilities are what make exciting modules playable.
HP measures module width. Power is measured separately on the +12V, −12V, and sometimes +5V rails. Add every module’s requirements and leave approximately 20–30% headroom rather than operating a power supply at its limit.
MIDI carries musical instructions; audio carries sound; CV directly controls modular parameters. A standard audio interface may record modular audio, but only DC-coupled connections designed for CV should send control voltage.
Begin with a simple patch and no modulation. Listen to each control manually. Then add one cable, identify exactly what changed, and repeat. Saving short recordings makes cause and effect easier to recognize.
Choose a direction
Clock, percussion, modulation, and level control for pattern-focused music.
Open starter guide → 02Sound processing, slow movement, and spatial effects for evolving patches.
Open starter guide → 03Pitch sequencing, a musical voice, dynamics, and effects.
Open starter guide → 04Computer integration, sampling, a distinctive voice, and compact processing.
Open starter guide →First-rack mistakes
Budget for VCAs, mixing, attenuation, and modulation.
Leave room for the utility you discover you actually need.
Check every rail and preserve headroom before ordering.
Know how modular-level audio will reach your mixer, interface, or headphones.
Small patches teach faster than a wall of unexplained cables.