Chorus Processors: What to Know
Chorus processors duplicate your input signal, detune the copies slightly, and modulate them over time to create the illusion of multiple voices playing in unison. The effect originated in the 1970s as a way to make synthesizers and electric guitars sound wider and more animated. Today, producers use chorus on everything from bass guitars and synth pads to vocals and drum loops. Analog chorus units use bucket-brigade devices (BBDs) to create their characteristic warm, slightly gritty modulation. Digital versions offer cleaner paths and more precise control over rate, depth, and mix parameters. Studio engineers typically run chorus as an insert effect during tracking or as a send effect during mixing.
What to Look For
Rate and depth controls determine how fast the modulation sweeps and how far the pitch deviates from the original signal. Slower rates with shallow depth create subtle doubling. Faster rates with deeper modulation produce the classic swirling chorus sound. Check if the unit offers multiple chorus modes: some processors include vibrato (100% wet signal with no dry blend) or ensemble modes that stack multiple chorus voices. Analog units with true bypass switching preserve your dry signal when the effect is off. Look for stereo outputs if you want to spread the chorused signal across your mix. Tone or EQ controls let you shape the frequency content of the modulated signal, which matters when chorusing bass or low-frequency synth parts. Input and output level controls help you match the processor to your signal chain without clipping or adding noise.
Top Brands
Warm Audio builds analog chorus processors based on classic studio designs from the 1970s and 1980s. Their units use bucket-brigade circuits for authentic analog modulation with modern reliability and balanced I/O.
Shop Chorus Processors at Blackout Audio
Chorus sits somewhere between utility and creative effect. You can use it to thicken a single synth line, add movement to a static pad, or turn a DI bass into something that fills more space in your mix. Pair it with reverb or delay for ambient textures, or run it before distortion for a wider, more complex overdrive character. Free shipping on orders over $199 across Canada. Browse the collection online and contact our team with technical questions about signal routing or specific applications.