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Gem EQP by Overloud is a Virtual Effect Audio Plugin for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin and an AAX Plugin.
Core i3 1.4GHz with 4GB of RAM, 1280x800 video.
Windows Vista, Windows 7, Windows 8 and Windows 10 are supported.
Macintosh Intel Core i3 1.4GHz with 4GB of RAM, 1280x800 video.
Mac OS X 10.9 Mavericks and above are supported.
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Gem EQP is an emulation of three iconic Passive EQ units, all in a single plugin, allowing users to extend the original tone capabilities by adding features that are not available on the analog units.


  • Emulations inspired by the Pultec* EQP-1A, MEQ-5 and HLF 3C.
  • Integrated programmable Clipper for punchy tones.
  • Frequency response graphic display for full control of the unit.
  • Obsessively accurate recreation of the original harmonic generation, with Overloud's Harmonic Matching technique.
  • Resizable graphic interface.
  • Selectable high oversampling mode.
  • Internal operating level calibration.
  • Multilevel undo-redo.

Three Units in One Plugin:

  • The Low & High unit is the most well-known hardware EQ. It features two bands with individual boost and attenuation parameters as well as an additional treble attenuation control. The attenuation parameter is centered on a different frequency than the boost, allowing you to create dips after the boosted frequency. This creates deep basses with a very in-focus and smooth top-end.
  • The MID unit offers two boosting bands and one attenuation band. The original circuit is fully passive and has two transformers: one at the input and one at the output that adds harmonics to the transients. In addition to its unique frequency response, the MID module delivers a super-musical coloration to your tracks.
  • Another fully passive circuit allows you to select the bandwidth in a musical way.

EQP extends the original hardware features and combines the flexibility of the digital world with the character of analog processing in the following features:

  • A built-in programmable clipper that allows you to enhance the transients and add punch to the recordings.
  • An EQ display for monitoring the real frequency response of each EQ module or of the whole unit.
  • The unit calibration feature that changes the character of harmonic generation.

EQP emulates the most desired EQ modules in the history of recording and mixing. Their warm, fat, and rich sound, with an incredibly detailed midrange, still excite even the most experienced engineers who mix with it. The original tone shaping circuits are based on passive design, which gives them a unique tonal character. However, to compensate for the loss of level of the passive circuit, the hardware units are equipped with an input transformer and an output tube amplifier, which creates very musical harmonics as well as a deep and warm bass sensation. The EQP uses Overloud's unique Harmonic Matching technology to recreate the original "coloration" in a way that has never been possible before.

{See video at top of page}

Latest User Reviews

Average user rating of 5.00 from 1 review

Reviewed By MattiaSanti [all]
April 13th, 2022
Version reviewed: 1.0 on Mac

The overloud audio tools team has released a new plug-in from the GEM series called EQP.
This plug-in includes three of the most iconic emulations of the famous Pultec passive EQs EQP-1A, MEQ-5 and HLF 3C in one plug-in.

The strengths of this plug-in apart from the great realism of the product are the addition of a Display and Clip Level.
This tool transforms the sound of your drums, synths, vocals or mix in more dynamic and punchy.

Emulations inspired to Pultec* EQP-1A, MEQ-5 and HLF 3C
Integrated programmable Clipper for punchy tones
Frequency response graphic display for full control of the unit
Obsessively accurate recreation of the original harmonic generation, with the Overloud's Harmonic Matching technique
Resizable graphic interface
Selectable high oversampling mode
Internal operating level calibration
Multilevel undo-redo.

Read Review

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