OverToneDSP releases PTC-2A Pultec style EQ for Mac OSX


OverToneDSP has announced the release of the PTC-2A equalizer effect plugin for Mac.

Modelled on the classic Pultec EQP-1A, the PTC-2A features separate LF Boost and Attenuate controls, a transformer-coupled valve amplifier emulation and the control interaction responsible for all the signature Pultec sounds, including the famous ‘low-end trick’ in which LF Boost and Attenuate controls are used simultaneously to provide tight bass boost without losing detail.

OverToneDSP PTC-2AThe PTC-2A is modelled using measured data and schematics from the real hardware.

PTC-2A features

  • Separate LF Boost and Attenuate Controls — Simultaneous low frequency boost and cut, emulating the classic Pultec ‘Low-end trick’.
  • Physical Control Weighting — Replicates the ‘feel’ as well as the look of high quality rotary controls.
  • Passive Filters — 6dB / Octave passive filter emulation maintains the smooth frequency response and desirable control interaction of the original vintage designs.
  • Transformer-coupled gain stage — Similar to the original Pultec EQs, the passive filters are followed by a transformer-coupled tube amplifier stage which further enhances the vintage qualities.
  • De-cramped Mid-Range Filter — Innovative DSP technology models the behaviour of an analogue peak filter more closely than conventional digital algorithms, even at low sample rates.

The plugin is available to purchase for £40 GPB.

More information: OverToneDSP / PTC-2A

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The PTC-2A was updated with a panel power switch that provides completely clean bypass and some fixes. Also, the “plug-in half-price” offer has been extended through November, 2012.


The PTC-2a now supports VST3 for Windows and Mac.