Electro-Harmonix Stereo Talking Machine Effect Pedal GUITAR FILTER PEDALS

Electro-Harmonix Stereo Talking Machine Effect Pedal


  • $305.00


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Electro-Harmonix Stereo Talking Machine with Vocal Formant Filter

The Stereo Talking Machine with Vocal Formant Filter from Electro-Harmonix is a customizable envelope-controlled digital vowel filter. The Stereo Talking Machine (STM) utilizes multiple moving filters allows your guitar to create growling, gurgling, and snarling sounds. Nine selectable Voices deliver vowel sounds such as AH-OO and OW-EE, as well as Bassballs and wah-type dynamic filters. The Voices can be shaped with individual Attack and Decay controls while Sensitivity adjusts the envelope response. The resulting effects mimic characteristics of human speech and create sounds that are both organic and harmonically rich. The Stereo Talking Machine possesses true stereo outputs as well as an Effects Loop. An Expression Pedal input provides real time control over filter sweeps, while nine preset locations let you store and recall your selected programs. Each voice option in the STM sweeps between two distinct filter settings, mimicking the way a human mouth moves to form particular vowel sounds. The direction of the filter sweep can be reversed using the Sensitivity knob. The WAH and BB voice options simulate a classic wah-wah pedal filter and the EHX Bassballs filter respectively.


  • Nine selectable voices: Seven human vowel filter combinations, a classic wah-wah filter, and the legendary dual band filter of the EHX Bassballs
  • Ability to reverse the sweep of each voice, doubling your sound options
  • Attack/Decay knobs to separately control the rise and fall speeds of the filter sweep
  • Sensitivity control to adapt the effect's response to your playing style
  • Stereo Outputs for true stereo imaging and panning
  • Expression Pedal option to manually control filter sweep
  • Programmable distortion to make your guitar really growl
  • Programmable internal LFO for automatic filter modulation
  • Effects Loop side-chain
  • 9 fully programmable presets


  • LED Indicators: 2 x Sweep Level: Orange
  • 1 x Bypass Footswitch: Red
  • 1 x Preset Footswitch: LED ladder
  • Knobs: 1 x Knob: Blend/Volume
  • 1 x Knob: Voice Type/Fuzz Tone
  • 1 x Knob: Attack/Fuzz Gain
  • 1 x Knob: Decay/LFO Rate
  • 1 x Knob: Sensitivity (with voice polarity)/LFO Depth/Shape
  • Switches: Presets Encoder/Auxiliary Toggle Encoder
  • Bypass footswitch
  • Preset footswitch/Auxiliary Edit footswitch
  • Connectors: Input
  • Send/Return
  • Left mono output
  • Right mono output
  • EXP pedal
  • 2.1 mm barrel connector, 9 VDC power
  • Dimensions: 5.5 x 4.5 x 1.5" (13.97 x 11.43 x 3.81 cm)
  • Weight: 1.31 lb (0.6 kg)

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