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Synergistic Research
PHT Resonators
Type I (B.W.) & S (G.D.)

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Outside EU (excl. Tax): €103.31 Incl. Tax: €125.00

Quick Overview

  • High Frequency Transducer to upgrade any turntable
  • Tiny devices with high impact
  • Applicable to your phono cartridge or headshell
  • Available in 2 versions: Green Dream and Black Widow
  • Cleans up high frequency noise
  • Lowers noise floor
  • Improves resolution
  • Significant increase in sound stage scale
  • Improved mid range clarity
  • Enhanced low frequency control
  • Weight 0
  • Dimension 10x8 mm

Synergistic Research | PHT Resonators | Type I (B.W.) & S (G.D.)

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Control is power

Get more from your analog rig when you add PHT (pronounced ‘POT’) to upgrade your phono cartridge all without ever changing your phono cartridge. Simply apply one PHT - or - Phono Transducer, either Type ‘I' or Type ‘S’ atop your phono cartridge or headshell and immediately hear a dramatic shift in presentation. Of course like all UEF based tech you hear a lower noise floor, increased resolution, and improved bass extension with increased air and soundstaging. Available in two distinct strains, the Type ‘I’ Black Widow PHT’s add holographic realism to your recordings while Type ‘S’ Green Dream is all about focus, clarity, and musicality.

Available in two distinct strains:
- Type ‘I’ PHT is called Black Widow. Its sound is ethereal, lush and holographic. You’ll definitely ‘trip out’ the first time you experience your system on Black Widow!

- Type ‘S’ PHT is called Green Dream. Its sound is focused, precise and musical. The first time you listen to your favorite records on Green Dream you hear your record collection anew with before unnoticed spacial cues and clarity you never dreamt possible. It’s like getting a new and altogether higher grade cartridge all by simply adding one tiny PHT to your analogue rig!

Owning both Black Widow and Green Dream PHTs is like having two state-of-the-art cartridges costing thousands of dollars each, for the price of a good stylus pressure gauge!

Synergistic Research PHT by Michael Fremer and Robert Deutsch @ 


Placement guide


To get started simply apply 1 micro PHT transducer, Type 'I' or Type 'S', to the top of your phono cartridge or head-shell for an immediate and dramatic transformation. Improvements include a lower noise floor, increased resolution, improved bass extension with increased air and sound staging.



1. Check your cartridge's tracking force.

2. Apply a small amount of "White Tack" museum putty
     to the bottom of the PHT.




3. Firmly adhere PHT to either the TOP of the cartridge
     or the TOP of the headshell.

4. Re-adjust applicable settings.