Universal Audio has announced the release of two new UAD plug-ins as part of the Apollo and UAD v11.8 software update: the Shadow Hills Mastering Compressor Class A and the Maag EQ4 MS. Both titles build on classic designs with updated interfaces, expanded features, and enhanced sonics for modern music production.

“Shadow Hills Class A and Maag EQ4 MS give music creators access to two rare and unique sounds in the UAD catalog,” said Lev Perrey, VP of Product at Universal Audio. “Beyond the updated UI, they add entirely new sonics and workflow capabilities, expanding what’s possible for customers working with Apollo interfaces and UAD hardware.”

Shadow Hills Mastering Compressor Class A – $169 USD ($39 upgrade)

The Shadow Hills Mastering Compressor Class A plug-in emulates the sought-after “Red” edition hardware, of which only 50 units were built. Known for its dual-stage optical and discrete compression stages, it also offers switchable Nickel, Iron, and Steel output transformers to shape tones from open and airy to rich and saturated.

Enhanced with Tolerance Modeling Technology (TMT) by Brainworx, the plug-in delivers authentic channel-to-channel variations, adding depth and realism to mixes. New plug-in-only features extend the hardware’s capabilities.

Universal Audio

Key Features:

  • Updated version of the rare Class A dual-stage compressor
  • TMT technology by Brainworx for authentic analog channel variations
  • Nickel, Iron, and Steel output transformers for tonal flexibility
  • Hotter Class A circuitry with added presence over the original UAD model
  • Plug-in exclusive features: Mid/Side processing, Stereo Width, Mono Maker, Parallel Mix, Sidechain Filter, scalable UI
Universal Audio

Maag EQ4 MS – $129 USD ($39 upgrade)

The Maag EQ4 MS plug-in expands on the original EQ4 design, renowned for its transparent Air Band and musical tone. The new MS edition introduces Mid/Side processing, additional frequency options, and selectable Q values, making it a versatile tool for mixing and mastering.

With Brainworx TMT, the EQ4 MS captures the subtle channel differences of analog hardware, providing extra width and dimension compared to standard digital EQs.

Key Features:

  • Updated version of the classic EQ4 plug-in with expanded flexibility
  • Brainworx TMT for natural channel variations and added realism
  • Iconic Air Band for smooth high-end presence
  • Mid/Side tools for precise stereo image control
  • Expanded frequency choices and selectable Q values for detailed tone shaping

Additional Update: MIDI Learn

Also included in the UAD v11.8.1 update, MIDI Learn is now available for all UAD DSP plug-ins. This allows users to quickly map parameters to compatible MIDI controllers with a simple click-touch-move workflow, streamlining hands-on control without menu navigation.

Pricing & Availability

  • Shadow Hills Mastering Compressor Class A: $169 (new), $39 (upgrade)
  • Maag EQ4 MS: $129 (new), $39 (upgrade)
  • Both plug-ins, along with MIDI Learn functionality, are included in the Apollo & UAD v11.8.1 update, available September 4, 2025.

More information is available at www.uaudio.com