Small Chorus

"The nirvana of chorus or the chorus of Nirvana?"



The Small Chorus rack effect module compares to the EHX Small Clone.  It has a lush, swirly, liquid tone, perfect for Come As You Are and Smells Like Teen Spirit, since Kurt Cobain used this effect for those songs and others.



The Small Chorus compares to the EHX Small Clone chorus.  It is difficult to sort out the different versions of the EHX Small Clone.  There were few versions, and all nearly identical, but there was at least one key difference.  Some used the SAD1024 BBD and some (most) used the MN3007.  The size of the LED, color of the LED, naming ("Mini Chorus" vs "Full Chorus"), with or without a "-" in the name, original vs reissue, etc are cosmetic differences that don't seem to reliably indicate what is inside.  And, of course, there's debate over what was inside Kurt Cobain's Small Clone.

However, you needn't worry.  The MN3007 Small Clone 100% nails the Nirvana sound - rich, lush, watery - perfect, if that's what you're after.  Simple to use and still considered among the best-sounding chorus effects ever produced. And you can get that out of the GT version, which comes with the MN3007.  Other than the obvious differences in switching, power, and packaging, the Small Chorus is very similar to the Small Clone.  The only significant difference is that we provide a Depth knob instead of a Depth switch.  The knob allows you to dial in both of the original switch settings, among a range of other settings from a deeper to a more subtle chorus.



  • Small Chorus - compares to EHX Small Clone with MN3007 BBD.



No buffers



  • Custom Op Amp - Default is a 4558, like the original.  You can choose another one if you prefer.
  • Deep Switch - This switch changes the overall range of the Depth control from the stock range to a deeper range, increasing the overall intensity of the chorus.  If you want, we can add a third switch position for a range that is more subtle than the stock range.
  • Components - We use metal film resistors and a selection of capacitors that provide good tone and low noise. 


Front Panel

  • Rate
  • Depth
  • (optional) Deep / Normal switch


Rear Panel

  • Audio In
  • Audio Out
  • On/Off Footswitch
  • On/Off Override
  • DC Power
  • DC Power LED


Module Width

  • 1.5"
  • 2" left wing available
  • 1.5" right wing available


Power Consumption (aprox)

15 - 20mA


Base Configurations

Part # Description List Price
MOD-SCHORUS Small Chorus module $209



Part # Description List Price
MOPT-SCHORUS-CC Component Changes $0 - TBD



Part # Description List Price
MPT-SCHORUS-CA Replacement pot, switch, jack, LED cable assembly $19
MPT-SCHORUS-KNB Replacement control knob $2
MPT-SCHORUS-PB Replacement power board $29
MPT-SCHORUS-SB Replacement switching board $29