Electro Harmonix Stereo Polychorus

EffectBasically, the Stereo Polychorus is the famous Small Clone Sound, but here in full stereo. The signal-to-noise ratio has been improved, and with its numerous possibilities, this pedal is probably one of the most versatile analogue chorus effects.

  • Controls for Mode, Width, Rate, Tune / Delay and Feedback
  • Stereo version
  • Measurements (WxDxH): 145 x 120 x 64 mm
  • Incl. power supply
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  • Chorus Epiano
  • Flange Delay
  • Rotary Git

Further information

Chorus Yes
Flanger No
Phaser No
27 customer ratings:
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Great range of sounds...but be prepared to tweak!

DarnWeight, 10.04.2015
Solid construction, seems plenty robust enough. For me, the range of sounds available is very, very close to vintage models. Most usable sounds are with the Width and Tune/Delay dials set fairly conservatively...things get pretty crazy at noon or beyond, but you'd expect this from EHX stuff! Great chorus sounds, and the flange sounds really close to the Electric Mistress to me...pretty easy to dial in some authentic Andy Summers tones.

One issue, however...prominent clock noise (whining/whistling) with the delay above about 12-1pm on the dial. I carefully (small increments!) adjusted one of the internal trim pots to reduce this, and it sounds much better to me, with clock noise only creeping in beyond 3pm now. Don't attempt this unless you know what you're doing. There are 8 trim pots, and you do not want to get the wrong one!

It's an analog effect, so this kind of artefact is to be expected, but I think the delay time is dialled in a little too long from the factory. Would be nice if EHX picked this kind of thing up before shipping, but it's not a big deal.

In all, I'm very happy with my Polychorus!
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Total
handling
features
sound
quality

Electro-Harmonix Stereo Poly Chorus

Arnaud27, 24.05.2011
Analog Pedal Flange / Chorus.
4 modes: Filter Matrix - Flange - Chorus - Double Track.
1 switch Sweep filter.
Connection: 1 input - 2 outputs for a stereo effect - 24 volt power supply.

The Stereo Poly Chorus is a very versatile pedal with 4 knobs (width, rate, tune / delay, feedback), so the possibilities are very numerous but it is necessary to spend a lot of time on it to find its own sounds.

The filter matrix gives a "chime" effect, it can also be used as a flanger, but only manually.

The flange is one of the most complete modes of this pedal, depending on the settings, the effects are varied (chorus, flanger, vibrato).

The chorus has a sound somewhat comparable to that of the Small Clone but with much more "extreme" possibilities.

The double track creates an echo, a very short delay, more effective if the pedal is connected in stereo mode.

As for the sweep filter, it is not very useful and efficient, sometimes difficult to tell the difference whether it is activated or not, apparently activated that "smooth" sound.

This pedal has a particular sound, very colorful that may not please everyone, so I advise to test it as much as possible before.

It can especially bring some touches to certain pieces, especially if you are adept psychedelic sounds / noise.

On the other hand, some knobs whose feedback are to be used sparingly if you do not want to affect the rest of your settings.

Finally, the Stereo Poly Chorus is a good pedal, really unique but sometimes difficult to use especially live, clear to you to get the best!
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249 €
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Online Guide
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Modulation Effects Pedals
The term ‘modulation’ in its broadest sense covers a range of sonic effects, from the subtlest chorus to ear-bending ring modulation.
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Online guides
Modulation Effects Pedals
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The term ‘modulation’ in its broadest sense covers a range of sonic effects, from the subtlest chorus to ear-bending ring modulation.
 
 
 
 
 
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