The ThorpyFX Pulse Doppler is a ThorpyFX phaser pedal, currently around $289.89. Close alternatives include the Strymon Zelzah -Dimensional Phaser and the Source Audio Vertigo. It pairs well with the Fender Twin Reverb Head and the Fulltone OCD.
ThorpyFX Pulse Doppler
ThorpyFX · pedal
The ThorpyFX Pulse Doppler is an all-analogue twin-notch four-stage phaser developed with original Lovetone designer Dan Coggins, effectively a MkII of his 1995 Doppelganger in a far more compact and usable form. Multiple operating modes span classic phase shifting, pitch-wobbling vibrato, pure pulsating tremolo and a range of points in between. Depth, Rate, Blend, Enhance and Manual controls, plus two toggles and two footswitches, let it mimic the sweep of an MXR Phase 90 or an Electro-Harmonix Small Stone as well as Uni-Vibe throb and rotary-speaker shadings, though its overall tonality is brighter than a genuine '70s unit. Separate dry and wet outputs make it a true stereo effect, where its psychedelic swirl is most persuasive. It rewards learning rather than being plug-and-play. Built in a military-grade aircraft aluminium enclosure.
What stands out
“separate dry and wet outputs make it a true stereo effect”
— from the listing
“The ThorpyFX Pulse Doppler delivers stereo Doppler and phaser modulation at ThorpyFX boutique quality for psych, ambient, and experimental players who want immersive spatial modulation from a respected UK manufacturer”
— from the community notes
“the thorpyfx pulse doppler is an all-analogue twin-notch four-stage phaser developed with original lovetone designer dan coggins”
— from the listing
“Strengths: Unique stereo Doppler-effect phasing delivers immersive spatial modulation in military-grade aircraft aluminum at ThorpyFX UK boutique quality”
— from the reviews
“Its standout strength is the unique stereo Doppler-effect phasing in aircraft aluminum at ThorpyFX boutique UK quality”
— from the community notes
Trade-offs
“In the signal chain modulation sits after drive”
— from the community notes
- stereo
- modulation
- phaser
- pitch
- tremolo
- vibrato
- specialized doppler character
- experimental
Price updated Oct 24, 2026
Genres the ThorpyFX Pulse Doppler is commonly used in
- Ambient
- Experimental
- Post Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Electronic
cited
Inferred from shared tonal signals, not a stated genre tag. - Shoegaze
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the ThorpyFX Pulse Doppler
Pedals that stack with the ThorpyFX Pulse Doppler
Fulltone OCD
Fulltone
7% matchFulltone OCD's own full character is the real reason this is worth trying
Comes earlier in the signal chain
J. Rockett Archer
pedal
7% matchWhat J. Rockett Archer brings here leans toward high headroom — that's worth building a pairing around
Comes earlier in the signal chain
Crazy Tube Circuits Splash MKIV Reverb
Crazy Tube Circuits
5% matchPut Crazy Tube Circuits Splash MKIV Reverb after ThorpyFX Pulse Doppler in the signal chain, where it won't crowd ThorpyFX Pulse Doppler — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Crazy Tube Circuits White Whale
Crazy Tube Circuits
5% matchRun Crazy Tube Circuits White Whale after ThorpyFX Pulse Doppler in the signal chain, where it won't crowd ThorpyFX Pulse Doppler — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Cheaper alternatives
NuX Mod Core Deluxe MKII Modulation Effektpedal
Nux
56% similarityShared character: phaser, vibrato, tremolo
Catalinbread Pareidolia
Catalinbread
56% similarityShared character: phaser, tremolo, modulation
Audiocade Stereo Pendulum Harmonic Panning Tremolo
Audiocade
54% similarityShared character: stereo, tremolo, ambient
Alexander Pedals Luminous Phaseshifter
Alexander Pedals
54% similarityShared character: phaser, vibrato, stereo
Death By Audio Moonbeam Stereo Multi-Stage Phaser
Death By Audio
53% similarityShared character: phaser, stereo, modulation
Electro-Harmonix Lester K Stereo Rotary Speaker
Electro-Harmonix
52% similarityShared character: stereo output, stereo, ambient
Boutique & premium upgrades
Similar charactersee all similar tone character →
Strymon Zelzah -Dimensional Phaser
Strymon
56% similarityShared character: stereo output, phaser, vibrato
Source Audio Vertigo
Source Audio
52% similarityShared character: vibrato, tremolo, ambient
AA Audio Rotary 3 toggle Phase, Vibe
Aa Audio
50% similarityShared character: wide range, phaser
Ibanez PH Mini
Ibanez
49% similarityShared character: phaser, modulation, stage
Fairfield Circuitry Shallow Water, K-Field Modulator
Fairfield Circuitry
48% similarityShared character: vibrato, tremolo, ambient
Strymon Eventide TriceraChorus
Strymon
48% similarityShared character: stereo output, phaser, stereo
See all alternatives to the ThorpyFX Pulse Doppler (cheaper + boutique) →
Questions people ask
What are good alternatives to the ThorpyFX Pulse Doppler?+
The closest matches in character are the Strymon Zelzah -Dimensional Phaser, the Source Audio Vertigo, the AA Audio Rotary 3 toggle Phase, Vibe. Budget picks: NuX Mod Core Deluxe MKII Modulation Effektpedal, Catalinbread Pareidolia, Audiocade Stereo Pendulum Harmonic Panning Tremolo. Boutique upgrades: Ibanez FP-777 Flying Pan Reissue.
What pairs well with the ThorpyFX Pulse Doppler?+
Strong matches from rig and tone-complementarity evidence: Fender Twin Reverb Head, Fulltone OCD, J. Rockett Archer — Fender Twin Reverb Head's own dynamic character is the real reason this is worth trying.
How much does the ThorpyFX Pulse Doppler cost?+
Around $289.89 (live listing price, updated Oct 24, 2026).