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 PTM-5A by OverTone DSP is a Virtual Effect Audio Plugin. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin and an AAX Plugin.
Product PTM-5A
Developer OverTone DSP
Price (MSRP)
Type / Tags Pultec MEQ 5AnalogAnalog EmulationAnalogue Tube EQEqualiserEqualizerEqualizer/PreampMid-range EQPassive EqualizerPultecPultec EQPultec EQP-1APultec MEQ 5
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
Downloads Released
System Requirements
Requires 32 or 64-bit Windows 7 or newer and a VST, VST3 or AAX compatible host application.
Downloads Released
System Requirements
Requires Mac OS X v 10.8 or newer and a VST, VST3, Audio Unit or AAX compatible host application.
Downloads Released
System Requirements
Requires an X11 compatible Linux distribution and a native Linux VST compatible host application.


Based on the classic vintage MEQ-5 mid-range EQ, the PTM-5A replicates the sought-after passive filter character, providing a versatile equalizer plug-in capable of subtle sonic enhancement or adding more obvious bite to the mid-range to help elements of the mix stand out.

Ideal for acoustic instruments, drums and vocals, the PTM-5A perfectly complements more familiar EQP-1A style plug-ins and emulations.


  • Smooth controls with no 'zipper noise' when adjusting the plug-in settings.
  • Physically Weighted Controls replicate the virtual 'feel' as well as the look of high quality rotary controls.
  • Analogue Filter Modelling algorithms recreate natural analogue filter curves, without requiring high sample rates or CPU intensive up-sampling, allowing more plug-in instances in a typical DAW.
  • Transformer-coupled valve / tube amplifier emulation enhances the desirable vintage tone.
  • Live resizable GUI for best use of available screen space and resolution.
  • Circular, Relative and Linear control modes for intuitive user interface operation*.
  • Adjustable output level trim.
  • Switchable output phase / polarity.
  • Download and try for free. Audio will fade out periodically in demo mode.

*In host applications which support circular control modes, the PTM-5A provides beautifully engineered circular and relative-circular adjustment options. Physical modelling ensures the rotary controls respond smoothly, accurately and predictably to circular mouse movement.

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