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 FC70 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 FC70
Developer OverTone DSP
Price (MSRP)
Type / Tags Fairchild 670 CompressorAnalogAnalog EmulationAnalog Tube CompressorAnalogue Tube CompressorBus CompressorCompressor Dynamics EQDrum CompressorDynamics (Compressor / Limiter)Fairchild 670 LimiterMastering Buss CompressorMastering LimiterMid-Side Mastering Limiter
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.
Miscellaneous Information
Copy ProtectionKey File


Inspired by the effortless dynamic control and uniquely musical character of the classic Fairchild 670 vintage limiter, the FC70 emulates a fully balanced design, combined with an innovative delay-free feedback algorithm which accurately mirrors analogue sidechain behaviour.


  • Smooth controls with no 'zipper noise' when adjusting the plug-in settings.
  • Fast attack and program dependent release settings.
  • Lateral / Vertical, Independent and Linked stereo channel modes.
  • Innovative delay-free feedback algorithm which accurately mirrors analogue side-chain behaviour.
  • 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 FC70 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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