

Like the Stereo Chorus, the Analog Chorus has controls to tweak the wet/dry mix and shape the high and low end of the chorus effect. Compared to the Stereo Chorus, its pitch shifting quality is more subtle, but with lower headroom, this pedal breaks up nicely when pushed with a little extra gain.


The Analog Chorus is MXR’s take on the classic “dirty” analog chorus sound. The MXR team swapped out the Manual control for an Intensity control-essentially a wet/dry mix-and added Bass and Treble EQ controls and a Bass Filter switch to remove the effect from low end frequencies.

Running on 18 volts, the Stereo Chorus now has a ton of headroom. Today’s version has a very clean, modern sound with a very pronounced pitch shifting quality. The Stereo Chorus returned to the MXR line several years ago with a complete circuit overhaul. A few years back, we re-introduced the Micro Chorus-along with the Micro Flanger-as a faithful reissue of the original circuit. While compact and easy to use, the Micro Chorus pours out volumes of rich, modulated shimmer with a hint of flange around the edges. With a single Speed knob for straightforward operation, this pedal is to chorus what the Phase 90 is to phasing. The Micro Chorus followed the Stereo Chorus in 1981. As with the MXR Flanger, the Stereo Chorus’ Manual control allowed players to adjust the effect’s delay time (the Speed control adjusted the oscillation rate). The original Stereo Chorus was all-around great sounding pedal, but its most defining feature was its Manual control. MXR ® first entered the chorus market in 1980 with big, yellow, three-knob box simply called the Stereo Chorus. Since then, artists from all over the stylistic map have embraced the effect, from Alex Lifeson and Andy Summers to Eddie Van Halen and Slash. Pedal versions followed shortly after, but it wasn’t until the ’80s that chorus really found its place in popular music. Guitar players first got their hands on the chorus effect in 1975 as a feature of Roland’s Jazz Chorus Amp. This pitch shifting mimics the slightly off-key sound created by a choir of singers-even though they’re singing the same piece of music at the same time, no one person is singing with exactly the same pitch and intonation as any of the others. Varying the duplicate signal’s delay time causes pitch shifting thanks to the Doppler effect. How does it work? Chorus pedals double your signal and then delay the duplicate at a constantly varying rate-usually with an LFO, or low-frequency oscillator-before mixing it back into the original signal. You can use chorus to fatten up your sound at lower settings, add depth and fluidity at moderate settings, and go full on space age at extreme settings.
