Stereo Pulsar Variable Shape Analog Tremolo

The Stereo Pulsar generates vintage tremolo and panning that will fill any venue with rhythmic stereo energy. Its Wave Form switch allows you to change the modulation from triangle to square form. The Wave Shape control allows you to control transitions from negative to positive saw tooth or adjust pulse width. This all means you can create any type of stereo tremolo from pure vintage to ones never heard before.

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From the Blog
Posted 4/3/2015



Multimedia Academy explores the EHX Stereo Pulsar Tremelo. Learn more here: http://www.ehx.com/products/stereo-pulsar


Posted 7/7/2014


Using the EHX Pulsar on a Rhodes electric piano, The Oneman Wara Band covers Stevie Wonder’s iconic “Cause We Ended As Lovers”.


Posted 5/30/2014



Presenting "Education on Modulation Part 2" by JJ Tanis. Here the guitarist/educator describes and demonstrates tremolo and vibrato. JJ also put together individual videos on the Stereo Pulsar variable shape analog tremolo and the Wiggler tube vibrato/tremolo.








Posted 12/20/2012



The Perfect Guitar demos the EHX Stereo Pulsar Variable Shape Tremolo.

Posted 5/25/2011



Guitar-muse.com reviews the Stereo Pulsar Variable Shape Tremolo and reports that “Electro-Harmonix delivers again!”

Click here to read the review

Posted 5/10/2011



All the way from Indonesia!  LOLA BANGS THE DRUMS as this Electro-Harmonix clad trio led by the talented Bayu Ardianto use seven EHX pedals to create a monster groove. Check out the dead-on Leslie from the HOG and POG 2 integrated with the Stereo Pulsar. Natalia Pratiwi provides super-cool vocals with backing from the Voice Box while Dika Charles Dickson’s drumming is always in the pocket.

Electro-Harmonix pedals used in this Video Song:

1. Small Stone (acoustic guitar)

2. Voice Box (vocal)

3. Deluxe Memory Man (vocals)

4. Stereo Memory Man w/ Hazarai (vocals)

5. POG2 (synthesizer)

6. Stereo Pulsar (synthesizer)

7. HOG (acoustic guitar)

Posted 4/27/2011



Dannymills07 plays his Rhodes Mk2 through an Electro-Harmonix Stereo Pulsar Variable Shape Analog Tremolo. Sweet!

Posted 4/11/2011



Here’s the latest videosong by the multi-talented Bayu Ardianto. This time he’s collaborating with Lola Bangs The Drums, a duet featuring Natalia Pratiwi and Dika Charles Dickson.
The title of the original song is “Dekati Aku” which translates to “come and get me!”

When producing this videosong Bayu drew inspiration from big band, swing music. He explained that because he doesn’t have brass instruments he mimicked the brass with his pianica and an EHX Voice Box in unison mode (one octave higher, one octave lower).

Bayu used the following EHX products in this production:
Voice Box (pianica)
Cathedral Stereo Reverb (electric guitar, electric piano, acoustic guitar)
Stereo Pulsar (electric guitar)
Russian Big Muff Pi (bass, lead synthesizer)
Double Muff (electric guitar)

Posted 12/21/2010

Thanks to the mad scientists at EHX the Stereo Pulsar Pedal goes far beyond the standard tremolo effect.

The rate knob controls the pulse of the effect from zero to an insanely fast blur.

At its highest rate the low frequency oscillator is so fast it pushes the frequency up in to the audio range. This creates a carrier note producing a cool ring modulation effect.

In the audio example below a low guitar string is plucked while the Pulsar’s rate control is turned up to maximum. You can hear the guitar tremolo start as a slow pulse and then morph into ring modulation. With the rate control at maximum, several riffs are played to demonstrate the sound.

Click here for an Audio sample

Click here to see the Pulsar set up

Previous Tone Tips posts:

Stay tuned, more Tone Tips posts coming soon!

Posted 8/10/2010

Posted 7/6/2010

Posted 5/27/2010

Posted 3/14/2010

In Effectology 14, pedal guru Bill Ruppert takes us on a journey to previously unchartered sonic territory. Using only Electro-Harmonix pedals and his guitar, Bill creates a series of “believe it or not” soundscapes. Whether it’s the sound of songbirds singing joyfully by a babbling brook or a vintage vinyl “lo-fi” recording complete with clicks and scratches, Bill’s mastery of effects will amaze you. As he says, “Never judge what an effect pedal will do by what you have heard it will do. Experiment and you will find new sounds not yet discovered!” Indeed!

Please note: Bill will be in the EHX Forums to discuss his sounds, settings, and process. We hope you join us there.

Previous episodes:

Stay tuned, more Effectology episodes coming soon!

Posted 2/25/2010

Sonic master Bill Ruppert reproduces the legendary Pink Floyd synth textures from “Welcome To The Machine .” Using only his guitar and the perfect blend of EH pedals, Bill re-creates the amazing sound-scapes that made this recording special. Each EH pedal provides its own magic to reveal the complexity and textures of the EMS VC3 synthesizer with stunning accuracy.

Please note: Bill will be in the EHX Forums to discuss his sounds, settings, and process. We hope you join us there.

Previous episodes:

Stay tuned, more Effectology episodes coming soon!

Posted 12/8/2009

Welcome to the eleventh installment of EHX Effectology. Bill’s shimmering tones and lush string pads aptly demonstrate the powerful potential that all Electro-Harmonix pedals have. From gorgeous, glassy creations to an elegant legato string section, Bill delivers classic sounds that rival some of the finest studio gear. All sounds were created with one talented guitarist and the perfect interaction of Electro-Harmonix pedals.

Please note: Bill will be in the EHX Forums to discuss his sounds, settings, and process. We hope you join us there.

Previous episodes:

Stay tuned, more Effectology episodes coming soon!

Posted 11/16/2009

Welcome to the tenth installment of EHX Effectology. In this episode Bill demonstrates a sound that reminds him of the keyboard sound in the Led Zepplein song “No Quarter”.
Second example is more of a traditional Fender Rhodes sound with a solo using the guitar into a Voice Box whistle mode.

Please note: Bill will be in the EHX Forums to discuss his sounds, settings, and process. We hope you join us there.

Previous episodes:

Stay tuned, more Effectology episodes coming soon!

Posted 10/7/2009

Posted 6/15/2009
Welcome to the second installment of Electro-Harmonix's new "Effectology" series. In the first episode, we transformed a regular electric guitar into a blues harmonica.

Today Bill Ruppert, Professor of Effectology, recreates the sound of Pink Floyd's "On the Run" from "Dark Side of the Moon" (pedals used: Micro Synthesizer, Stereo Memory Man with Hazarai, Frequency Analyzer, Big Muff Pi, Stereo Pulsar).

Please note: Bill will be in the EHX Forums to discuss his sounds, settings, and process. We hope you join us there.

Previous episodes:

Stay tuned, more Effectology episodes coming soon!

Posted 4/2/2009
Dig this intense performance of ZZ Top's "Blue Jeans Blues" by Portuguese trio Budda Power Blues. For the tremolo effect, Budda is playing through an EHX Stereo Pulsar, he reports: "I normaly use the first knob at 1 or 2 o'clock, the shape of the wave at about 10 o'clock, and I use different settings for the speed. I tend to prefer the triangular wave shape."

To further set the mood, here's a picture of ZZ Top's Billy Gibbons with EHX's Suzi Matthews (several of you previously spotted Suzi in this video tour of the EHX mothership):

Posted 11/18/2008

Posted 9/22/2008

Posted 2/27/2008
Thanks to Peter Stroud for this demo of the Pulsar, precursor of the Stereo Pulsar.

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Quick Specs
Stereo outputs
Tough and compact die-cast chassis
9-volt battery included
Optional 96DC-200BI power supply available
Dimensions in inches: 4.0 (w) x 4.75 (l) x 2.25 (h)
Dimensions in mm: 102 (w) x 121 (l) x 89 (h)
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