Now Available: UAD Shadow Hills Mastering Compressor Class A and Maag EQ4 MS Plug-Ins

Enhanced versions of two popular UAD plug-ins arrive as part of Apollo and UAD v11.8 software update

Scotts Valley, CA — September 4, 2025 — Universal Audio, a worldwide leader in audio production tools, today announced the release of the Shadow Hills Mastering Compressor Class A and Maag EQ4 MS plug-ins. As a part of the Apollo and UAD v11.8 software update, these plug-ins deliver enhanced sonics, with new features and workflows for modern music producers and engineers, or those looking to upgrade their current Shadow Hills or Maag plug-ins. 

“Shadow Hills Class A and Maag EQ4 MS give music creators access to two rare and unique sounds in the UAD catalog,” says 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.”

UAD Shadow Hills Mastering Compressor Class A — $169 USD

The Shadow Hills Mastering Compressor Class A plug-in is available for $169 with a special $39 upgrade price for current owners, and features new updates such as Stereo Width control, Mono Maker, Parallel Mix, scalable UI, and more.

The Shadow Hills Mastering Compressor Class A plug-in is a meticulous emulation of the legendary “Red” edition hardware — of which only 50 units were ever built. It delivers the coveted dual-stage optical and discrete compression stages, plus switchable Nickel, Iron, and Steel output transformers so you can dial in open and airy detail to thick, saturated tone.

Sonically enhanced with Tolerance Modeling Technology by Brainworx (TMT), the updated Shadow Hills UAD plug-in features the subtle channel-to-channel variations of the real analog gear, giving mixes added depth and realism. Customers can also access powerful features including Mid/Side processing, Stereo Width control, Mono Maker, Parallel Mix, scalable UI, and more — going far beyond the original hardware.

Shadow Hills Mastering Compressor Class A - Key Features

• Updated version of rare Class A dual-stage optical and discrete compressor plug-in
• TMT technology by Brainworx adds subtle channel-to-channel variations for greater analog realism
• Switchable Nickel, Iron, and Steel output transformers for unique tone shaping
• Enhanced Class A circuitry with 1–3 dB hotter presence than the original UAD plug-in
• Plug-in only features: Mid/Side, Parallel Mix, Stereo Width, Mono Maker, Sidechain Filter

UAD Maag EQ4 MS — $129 USD

The Maag EQ4 MS plug-in is available for $129 with a special $39 upgrade price for current owners, and features an updated plug-in interface with additional features that go beyond the original hardware. 

The Maag EQ4 MS plug-in brings life to a classic UAD plug-in title. Along with its iconic Air Band, the new version features Mid/Side processing, expanded frequency choices, selectable Q values. 

Ideal for adding presence to vocals and instruments, the Maag EQ4 MS now brings extra clarity and depth to mixes thanks to TMT technology by Brainworx — which captures the real-world channel variations that add analog realism unlike other matched digital EQs.

Maag EQ4 MS - Key Features

• Updated edition of the legendary EQ4 plug-in with expanded sonics and flexibility
• TMT technology by Brainworx captures natural channel-to-channel differences for extra width and dimension
• Iconic Air Band delivers transparent, musical high-end sheen for vocals and instruments
• Mid/Side processing tools for precise control of stereo image and depth
• Expanded frequency options and selectable Q values for refined tone shaping
  

Also included in the UAD v11.8.1 update, MIDI Learn is now available for all UAD DSP plug-ins, giving customers hands-on control of plug-in parameters with compatible MIDI controllers. With a simple click, touch, move workflow, music producers working in Apollo studios with UAD plug-ins can map knobs and faders in seconds — eliminating tedious menu diving.

Pricing & Availability

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

Learn more about Shadow Hills Mastering Compressor Class A:
https://www.uaudio.com/products/shadow-hills-mastering-compressor-class-a 

Learn more about Maag EQ4 MS: https://www.uaudio.com/products/maag-eq4-ms 

Learn more about UAD Plug-Ins: https://www.uaudio.com/collections/uad-plugins 

Download images and press materials: https://u.audio/uadshadowhills-maag-pr 

About Universal Audio Inc.
Universal Audio (UA) is a pioneer in audio and music production tools, with a rich 60-year history of craftsmanship and innovation. UA today enables millions of audio and music creators worldwide, with industry-standard Apollo and Volt recording interfaces, UAD plug-ins, UAFX pedals, advanced audio machine learning, LUNA recording suite, and UA Custom Shop hardware. UA is headquartered in Scotts Valley, California, with passionate employees worldwide — united by our goal of "Inspiring Sound for Generations."

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