Get the legendary tube compressor
from Capitol Studios
Capitol Mastering Compressor gives you the rich sound of the CM5511 — a legendary handbuilt tube mastering compressor designed and used by Capitol Studios on historic catalogs and thousands of hit records. Exclusively modeled by UA, now you can get the same professional finishing touch previously only available at Capitol Studios.
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Give your tracks the velvet touch of Capitol's handbuilt mastering compressor, the CM5511.
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Get the Pro Sonics of The Same Hardware Used on Catalogs from Capitol, Blue Note, Motown, Verve, and More.
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Easily Increase Perceived Loudness and Texture in Your Productions with Saturator, Mix, and Headroom Controls.
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Tighten Your Low End and Expand Your Stereo Width Using Simple Mono Fold and Mid/Side Features.
Get the Exclusive Sound
of Capitol Mastering

The CM5511 compressor has mastered entire catalogs from Capitol, Motown, Geffen, Blue Note, Def Jam, and dozens more, as well as modern records by Black Sabbath, Demi Lovato, and Selena Gomez.* Inspired by vintage Fairchild 670 and Gates Sta‑Level tube limiters — and designed for consistent results across Capitol's four mastering rooms — Capitol Mastering Compressor is an exacting emulation of this "spare no expense" hardware, giving you the modern tube-based sound of this custom-made dynamics masterpiece.
Expanded Controls for Complete
In‑The‑Box Mastering

Easily tighten low end, add subtle saturation, and tweak the stereo field with easy‑to‑use "plug‑in only" controls. Plus, comprehensive dBFS and LUFS metering and sidechain filter means you have a full-featured, modern mastering tool at your fingertips.
Add Expensive Sound
to your Instrument Groups

Not just for the 2‑bus, Capitol Mastering Compressor will add its tube‑based magic to your drum bus, synths, background vocals, and more, giving you the gorgeous dynamics control only achievable with this one‑of‑a‑kind, hit‑proven hardware.
TAKE A LISTEN
PRODUCT SUMMARY
- Precision Capitol Compressor Modeling: Emulates the iconic CM5511 tube mastering compressor from Capitol Studios, known for its smooth, musical compression.
- Saturation and Warmth Control: Adds rich harmonics and vintage warmth to any track or mix.
- Mid/Side Processing: Offers flexibility with separate processing for mid and side channels.
- Flexible Mix Control: Enables precise blending of compressed and uncompressed signals.
- Headroom Adjustment: Provides control over dynamic range and overall punch in the final mix.
TECHNICAL REQUIREMENTS
Formats :
VST3, AU and AAX
Operating System :
Mac OS 10.7 and up (including Native M1 Compatibility)
PC Windows 7 and up
DAWs :
Works with All major DAWs
including Ableton Live, Pro Tools, Logic Pro, FL Studio, Cubase, Nuendo, Studio One, Bitwig, Reaper, Reason etc.
Important note:
UAD plugins do not work in Apple's Garageband DAW
Now Compatible with Any Soundcard on Mac and PC
