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29-December-2025 ACM-1A Vintage Program EQ Released
Inspired by vintage Pultec style EQs, renowned for their ability to simultaneously boost and cut the low frequencies using separate controls - creating powerful, tight bass boost with focus and detail. The ACM-1A combines high performance processing with an intuitive stylized user interface. Perfect for adding that big studio sound to in-the-box mixes. The ACM-1A Vintage Program EQ Plugin for Windows and Linux
ACM-1A HF Boost and Attenuate Front Panel Controls
Building upon the popular ACM-2SA plugin, the ACM-1A features an updated DSP model with improved HF Boost and Attenuate control interaction, together with a modified transformer saturation model which extends the low-end for greater bass response compared to the original plugin. This is a free addition for existing users of the ACM-2SA, the ACM-1A is available to download for Windows and Linux PCs at: www.acmt.co.uk
 
Features
  • Smooth controls with no 'zipper noise' when adjusting the plugin settings.
  • Physically modelled rotary control modes.
  • Resizable graphical user interface.
  • Separate low frequency boost and cut for the classic Pultec 'Low end trick'.
  • Transformer-coupled valve / tube amplifier emulation.
  • Innovative processing models analogue filter behaviour - without additional latency or high CPU demand.
  • Valve / tube emulation adds subtle character even with the EQ section bypassed.*
  • VST, VST3, AAX and CLAP plugin.
  • Windows & Linux compatible.
System Requirements - Windows
  • 64bit Windows 7 or newer.
  • A compatible host application.
System Requirements - Linux
  • Linux x86-64/AMD64 64bit e.g. Ubuntu 20.04 LTS or newer.
  • An X11 or XWayland compatible host application.
  • A public beta for Wayland native Linux host applications which support the required VST3 interface extensions is also available.
*The EQ In switch bypasses the filter section, leaving the valve / tube emulation in the signal path, while the power switch provides a completely clean bypass if required.
 
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