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Average Price: $157

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$176+

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Description

Introducing the Seymour Duncan Shapeshifter Stereo Tremolo, a guitar effects pedal for the discerning musician. This pedal is not just another tremolo effect; it's a musical tool that offers unprecedented tonal control. Whether you're looking for a subtle shimmer or a pulsating throb, the Shapeshifter can deliver.

The Shapeshifter boasts an all-analog signal path combined with the precision of digital timing. This means you don't have to compromise on your tone to get the tremolo effect you want. The true bypass feature ensures that your signal remains intact when the pedal is disengaged.

The Shapeshifter has been designed with versatility in mind. It features variable wave shape options, ranging from sine to triangle to square waves, and everything in between. With its rate/ratio switchability, you can adjust the speed of the effect to your liking, or sync it to the beat of your music using the tap tempo control.

Furthermore, the Shapeshifter is not just a mono pedal – it's stereo. The inbuilt phase control lets you adjust the phase between left and right output channels, creating a spatial, three-dimensional tremolo effect.

This pedal is more compact than its predecessor, making it a space-saving addition to your pedalboard. The Seymour Duncan Shapeshifter Stereo Tremolo is the perfect choice for any guitarist aiming to add that unique touch to their sound.

Key Features:

  • All-analog signal path with true bypass for pure tone
  • Variable wave shape options for versatile sound shaping
  • Rate/ratio switchability and tap tempo control for precise timing
  • Stereo in/out with phase control for a spatial tremolo effect
  • Depth control adjustable from 0 to 30dB
  • Rate adjusts from 0.5 to 15 Beats per second
  • Shape is continuously adjustable from 10% to 90%
  • Phase control adjusts between left and right output channels from 0 degrees to 180 degrees

Product specs

Brand Seymour Duncan
Model Shape Shifter Stereo Tremolo
Finish Purple
Year 2010s
Made In United States
Categories Tremolo Pedals

FAQs

Does the Seymour Duncan Shape Shifter Stereo Tremolo work well with both electric guitars and bass guitars?

Yes, the Seymour Duncan Shape Shifter Stereo Tremolo is designed to work well with both electric guitars and bass guitars, providing versatile tremolo effects across different instruments.

What type of power supply does the Seymour Duncan Shape Shifter Stereo Tremolo require?

The Seymour Duncan Shape Shifter Stereo Tremolo requires a standard 9V DC power supply, commonly used with many pedalboards and effects pedals.

Is the Seymour Duncan Shape Shifter Stereo Tremolo suitable for stereo setups?

Yes, the Seymour Duncan Shape Shifter Stereo Tremolo features stereo inputs and outputs, making it ideal for creating immersive tremolo effects in stereo setups.

Can the Seymour Duncan Shape Shifter Stereo Tremolo create both vintage and modern tremolo sounds?

The Seymour Duncan Shape Shifter Stereo Tremolo offers a wide range of tremolo shapes and speeds, allowing you to dial in both vintage and modern tremolo sounds to suit various musical styles.

How does the tap tempo feature on the Seymour Duncan Shape Shifter Stereo Tremolo enhance its usability?

The tap tempo feature on the Seymour Duncan Shape Shifter Stereo Tremolo allows you to easily synchronize the tremolo rate with the tempo of your music, providing precise control over the effect timing during live performances.

ProGuitarShopDemos

ProGuitarShopDemos

Seymour Duncan Shape Shifter Tap Tremolo

Video thumbnail for Seymour Duncan Shape Shifter Tap Tremolo by ProGuitarShopDemos

Seymour Duncan Shape Shifter Tap Tremolo

ProGuitarShopDemos

ProGuitarShopDemos

Video thumbnail for Seymour Duncan Shape Shifter Stereo Tremolo by ProGuitarShopDemos

Seymour Duncan Shape Shifter Stereo Tremolo

ProGuitarShopDemos

ProGuitarShopDemos

Video thumbnail for Seymour Duncan Shape Shifter Stereo Tremolo Pedal Review by Sweetwater Sound by Sweetwater

Seymour Duncan Shape Shifter Stereo Tremolo Pedal Review by Sweetwater Sound

Sweetwater

Sweetwater

Video thumbnail for Seymour Duncan Shapeshifter Tremolo - UltraHD by Ola Englund

Seymour Duncan Shapeshifter Tremolo - UltraHD

Ola Englund

Ola Englund

Video thumbnail for Review Demo - Seymour Duncan Shapeshifter Stereo Tremolo by Premier Guitar

Review Demo - Seymour Duncan Shapeshifter Stereo Tremolo

Premier Guitar

Premier Guitar

Video thumbnail for Seymour Duncan ShapeShifter Stereo Tremolo by Steve from Boston

Seymour Duncan ShapeShifter Stereo Tremolo

Steve from Boston

Steve from Boston

Video thumbnail for Seymour Duncan Shapeshifter Stereo Tremolo Pedal Review by Mike Bradley

Seymour Duncan Shapeshifter Stereo Tremolo Pedal Review

Mike Bradley

Mike Bradley

Reviews

PROS

  • Exceptional stereo effects for a dynamic audio experience

  • Channel Phase offers unique synchronized or oscillating tremolo

  • Superior to many for 3D audio effects, especially with fuzz

  • More accessible and comprehensive controls compared to competitors

  • Ratio feature allows for creative rhythm patterns (e.g., 1/3)

  • Tap tempo and visible light enhance live performance usability

  • Versatile for both guitar and mixing rig applications

  • Flexibility in changing between time or ratio for effects

  • Offers more than just traditional tremolo with its features

CONS

  • Causes some volume drop when activated

  • Lacks a level (volume) control for balancing output

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Seymour Duncan Shapeshifter Stereo Tremolo.

Features and functionality

  • The newer purple model includes stereo in/outs and a channel phase control, enhancing its flexibility compared to the older grey version.

    Source
  • The newer model allows tap tempo to be set even when the effect is bypassed, a feature not present in the older version.

    Source
  • The modified tap in jack on the Shapeshifter V2 isn't perfectly accurate, often being 1-2 bpm off when synced with other time-based effects.

    Source

Build quality

  • The purple version is manufactured in the U.S. with better parts, leading to improved durability and reliability compared to the older grey model.

    Source

User experience

  • Owners appreciate the visual LED knob on the newer model for visibility on dark stages, though some find the blinking LED less desirable.

    Source
  • For users with cramped pedalboards, the Shape Shifter's size is a significant consideration, leading some to opt for smaller pedals.

    Source

Value and pricing

  • Used Shape Shifters can be found for around half the normal retail price, presenting a cost-effective option for those interested.

    Source

Comparisons

  • Owners have replaced the Shape Shifter with the Polaron phaser, preferring its multiple settings banks for gig use despite similar size.

    Source
  • The Ibanez Tremolo Mini and Mooer tremolo pedals are suggested as compact, affordable alternatives for simple tremolo effects.

    Source
  • The EHX Super Pulsar is recommended as an alternative, offering all desired features and more, including stereo ins/outs and tap control.

    Source

Use cases and applications

  • Shape Shifter is often used for shallow, pulsing rhythm tones live, while choppier settings are enjoyed for home jamming.

    Source

4.0 out of 5

Based on 1 Review and 5 Ratings

5 star
4 star
3 star
2 star
1 star
gary_dizon

This is my favorite tremolo

The tap tempo and the light makes this tremolo really functional live. The tone from this effect is pretty stunning. The flexibility for this can change between time or ratio. The attack can be adjusted to the attack or fundamental.

From Gear Setup

Artist usage

Add artist
See how Kevin Shields uses Seymour Duncan Shapeshifter Stereo Tremolo

Kevin Shields

Singer, Guitarist

My Bloody Valentine

...
Verified via Twitter

Kevin Shields of My Bloody Valentine uses the Seymour Duncan Shapeshifter Stereo Tremolo, as highlighted by Seymour Duncan on Twitter. The post features a look at Shields' pedalboard, showcasing the Shapeshifter among other effects pedals.

See how Chris Shiflett uses Seymour Duncan Shapeshifter Stereo Tremolo

Chris Shiflett

Guitarist

Foo Fighters

...
Verified via Seymour Duncan

Chris Shiflett is noted on the Seymour Duncan website as a user of the Seymour Duncan Shapeshifter Stereo Tremolo pedal.

See how Tosin Abasi uses Seymour Duncan Shapeshifter Stereo Tremolo

Tosin Abasi

Guitarist

Animals as Leaders

...
Verified via YouTube

The Seymour Duncan Shapeshifter can be spotted on Abasi's board at (0:08) in this video.

See how Misha Mansoor uses Seymour Duncan Shapeshifter Stereo Tremolo

Misha Mansoor

Guitarist, Drummer

Periphery

...
Verified via YouTube

Earthquaker Dreamcrusher Fuzz / Seymour Duncan Shapeshifter Tremolo

See how Sammy Duet uses Seymour Duncan Shapeshifter Stereo Tremolo

Sammy Duet

Guitarist

Acid Bath

...
Verified via Guitar Pickups, Bass Pickups, Pedals

Sammy Duet is listed on the Seymour Duncan website as using the Seymour Duncan Shapeshifter Stereo Tremolo pedal.

See how William Levy uses Seymour Duncan Shapeshifter Stereo Tremolo

William Levy

Guitarist

The Story So Far

...
Verified via Photo

In an Instagram story, William Levy is shown with the Seymour Duncan Shapeshifter Stereo Tremolo pedal. The image clearly displays the pedal, though it's unclear if he uses it during live shows.

See how Jim Fairchild uses Seymour Duncan Shapeshifter Stereo Tremolo

Jim Fairchild

Guitarist

Modest Mouse

...
Verified via Premierguitar

According to Premier Guitar's rig rundown, Fairchild uses Seymour Duncan Shapeshifter Stereo Tremolo.

See how Jack Fowler uses Seymour Duncan Shapeshifter Stereo Tremolo

Jack Fowler

Guitarist

Sleeping with Sirens

...
Verified via Photo

Super stoked to give this Shape Shifter and Palladium Gain a Go all summer long

See how Christian Martucci uses Seymour Duncan Shapeshifter Stereo Tremolo

Christian Martucci

Guitarist

Stone Sour

...
Verified via Seymour Duncan

Christian Martucci is endorsed by Seymour Duncan and one of his mentioned gear was the SD Shape Shifter.

See how Anthony Marinelli uses Seymour Duncan Shapeshifter Stereo Tremolo

Anthony Marinelli

Keyboardist, Composer

...
Verified via YouTube

In the video titled "My Synth Studio Revealed | Studio Tour 2025" by Anthony Marinelli Music, a Seymour Duncan Shapeshifter Stereo Tremolo pedal is clearly visible in Anthony Marinelli's pedalboard setup at the 13:14 timestamp.

D

Dave Nassie

Guitarist

No Use for a Name

...
Verified via Photo

Big thanks to @friedman_amplifiers [Friedman Amps] for such a killer board, with a built in buffer. @jimdunlopusa [Dunlop] #mxrpedals [MXR], @seymourduncanpickups [Seymour Duncan and #pedals, and @stringslinger479 [Dinesh Lekhraj] for making it so clean. Left lots of space.. we will see how it all changes. #thankful #godisgood

See how Phillip Farris uses Seymour Duncan Shapeshifter Stereo Tremolo

Phillip Farris

Guitarist

Norma Jean

...
Verified via Photo

In this Instagram photo, we see the Seymour Duncan Shapeshifter.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Seymour Duncan Shapeshifter Stereo Tremolo, it is most commonly used with the following gear.

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Community setups

Show yours
gary_dizon

gary_dizon

Gear IQ 579

arturo_rugerio

arturo_rugerio

Gear IQ 99

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