This has been a limited run module, this is the final batch - my inventory of TDA1022 chips are now exhausted.  Bestow your rack with the nirvana it requires before they're all gone.

Oh glorious analog BBD goodness! JP4 Chorus is a mono-input, stereo-output chorus ensemble made for eurorack. Employing two LFO-modulated bucket brigade delay lines using nearly extinct NOS Panasonic TDA1022 chips in place of the MN3004. 

RATE: SLOW is the lazy swirl of the original Jupiter-4; MED you can feel the momentum gaining traction; FAST is like a lively string ensemble when you feed it a raw sawtooth.

ON/OFF Switch: not true bypass, but the delay lines are removed from the audio path well enough.

Please note – JP4 Chorus is designed for eurorack signals. Guitar/Mic/Line level external synths and instruments will need a pre-amp or instrument input module.

Be sure to check out my other cool modules available in my Reverb store.

Includes 16-pin-to-10-pin power connector cable.


  • Inputs: 1 mono input jack w/ signal attenuation
  • Power: 10-pin Eurorack standard shrouded header
  • Outputs: 2 jacks Stereo Output Pair
  • Current:  20mA +12V, 80mA -12V, +5V (not used)
  • Width: 4HP
  • Depth:  45mm

JP4 Chorus pairs well with:

  • 101-VCO
  • Happy Nerding FX Aid reverbs and delays
  • Bastl Hendrikson, for outboard instruments
Please note - The module is not intended to be used without an audio input.  The JP4-Chorus module does not have the benefit of auto shut-off on no input signal condition like a guitar pedal. And therefore doing so will produce unwanted audio artifacts.

“Pretty cool deal for a wicked piece of gear.” -JW

“Excellent sounding module with good build quality.” -MR

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.learn more
Made In
  • United States


Oklahoma City, OK, United States
Joined Reverb:2016

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