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An obsessively accurate emulation of API’s flagship compressor.

The API 2500 Bus Compressor is a permanent fixture on the stereo bus of many of the world's top engineers and producers. Considered the best of the Paul Wolff-era API circuit designs, this famed compressor adds energy, movement, and tone to stereo mixes and subgroups unlike any other compressor.

The API 2500 Bus Compressor plug-in for UAD-2 hardware and Apollo interfaces is a spot-on emulation of this classic compressor, capturing its all-discrete signal path with Thrust® circuitry — and features a fanatically detailed modeling of API's custom transformers and 2510 and 2520 op amps.

Glue together your stereo mixes and subgroups with the world’s finest circuit emulation of the iconic API 2500 compressor

Select between "Old” and "New” compression, with feedback or feed-forward sounds

Sharpen your workflow with plug‑in‑only Mix and Headroom controls

Punch up low frequencies with API's patented Thrust technology

Contour your mix's stereo interaction with percent-based L/R Link controls

Mix with artist presets from Jeff Balding (Faith Hill), Vance Powell (Jack White), Ryan Hewitt (Red Hot Chili Peppers), and more

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Take a Listen

Take a Listen
API 2500 5-Minute Tip
API 2500 5-Minute Tip

API 2500 5-Minute Tip

Learn how to use the API 2500 on drums, bass, guitars, and your entire mix.

The Only End-to-End API 2500 Emulation

The Only End-to-End API 2500 Emulation

Poring over proprietary "for-your-eyes-only" schematics made available to Universal Audio by API, our team of DSP experts analyzed two classic API 2500s — rackmount and in-console — ensuring one of UA's tightest behavioral circuit models to date. Working together with API's engineers, we scrutinized every facet of the plug-in against its analog counterpart, delivering the definitive representation of this iconic compressor. Early beta testing with UA artists confirmed that the plug-in ranks among the most accurate analog emulations in UA history.

Built for the 2-Bus

Built for the 2-Bus

API designed the 2500 compressor with program material firmly in mind. Its Release control includes fixed or variable options, while the Attack, Threshold, and Ratio controls offer musical tweaking throughout their range, making the API 2500 a toneful dynamics overlord for your stereo bus.

Shaping Tone and Dynamics

Shaping Tone and Dynamics

The API 2500 allows selection between three custom-voiced compression Knees — Soft, Medium, and Hard. You can shape the tone further with two compression types; "Old" for characterful peak-detection harkening back to API's earliest, highly-coveted 525, or "New", which features a modern feed-forward design.

Thrust Control for Unmatched Punch

Thrust Control for Unmatched Punch

Taken from their Paragon series of consoles, the API 2500’s Thrust feature puts a filter before the RMS detector, evening high and low frequency energy — so neither triggers the compressor more than the other. This gives you a tight hallmark API punch beyond any other compressor.

Enhance Energy and Motion

Enhance Energy and Motion

Most compressors only allow you to turn left/right linking on or off. The API 2500 Bus Compressor Link parameters allow for precision control of your mix's L/R dynamic interaction. Set exactly how much dependence — or independence — you want your L/R spatial dynamics field to have, and hone your dynamic contours even further with the Shape control.

Watch The Reviews

      Key Features

      Painstakingly modeled by Universal Audio's plugin design team, licensed and authenticated by Automated Processes, Inc.,
      Beloved Paul Wolff-era API design, exclusively measured from the all-discrete, in-console version of the 2500
      Provides the entire circuit path and control set of the API hardware including custom API op amps and transformers
      Signature API 2500 features include patented Thrust® sidechain filtering, "New" and "Old" Compressor Types, and Variable Sidechain Link
      Plug-in-only features include Dry/Wet parallel processing and Headroom for user-customizable operating level
      Includes artist presets from Vance Powell, Jeff Balding, Ryan Hewitt and Adam Hawkins

      User-Rezensionen

      API 2500 Bus Compressor

      R. Adams

      30. Januar 2023

      Enhancer Maximus

      This does a beautiful job of enhancing the shape of your source material whether vocal or instrument or mix bus.

      J. Tornay

      15. Januar 2023

      Must have

      One of the plugins that cannot be missing in your collection, analog flavor extremely similar to hardware and also includes the plugin in native format, double the fun

      J. Vanderhorst

      10. Januar 2023

      Best Bus Compressor Period

      Best bus Compressor there is . And UA qaulity is unmatched

      S. Rogers

      6. Januar 2023

      Great bus compressor

      Absolutely fantastic.

      C. Dahl

      2. Januar 2023

      Great 2-bus compressor!

      ...but also on pretty much anything else. Great emulation.

      a. min

      30. Dezember 2022

      Punch and Clarity

      it;s magic

      s. galli

      25. Dezember 2022

      Great

      This is a great compressor!

      L. Spilger

      24. Dezember 2022

      Punch and Clarity

      Punch and clarity on my drumbus or 2bus. Recently I also got great results on a piano stereo track with it‘s piano leveler preset with my ravel!

      G. Seminario

      22. Dezember 2022

      Fascinating.!!

      I couldn't believe it when I got it and tried it, it's incredible, it was worth it, honestly it's incredible

      A. Mujic

      20. Dezember 2022

      Great products by API & Universal Audio

      I use API 2500 by Universal Audio for drum busses & master buss. Great tool to glue all things together to get rich and continuous sound. Work off every paid dollar.

      Thank you UAD,
      Allen Rix

      G. Grinko

      15. Dezember 2022

      Best compressor!

      Api 2500 good compressor for drums and different instruments group. Thanks!

      P. Sviyazov

      11. Dezember 2022

      Modern bus

      Very versatile sound! Can be anywhere in the chain, not just bus. Great on parallels!

      M. Fagnoul

      11. Dezember 2022

      even subtle

      Highly recommend this one. It gives the glue to your mix.

      M. Memley

      9. Dezember 2022

      magic

      Gives me the glue I need on my drum bus! Absolutely in love with this.

      U. Audio Account

      9. Dezember 2022

      Imprescindible en tu bus de baterías

      Aporta un cuerpo y una solidez a las baterías estupenda, merece la pena.

      J. Coiffard

      7. Dezember 2022

      Great Bus compressor

      Amazing compressor especially on the drum bus. The ability to dial in a mix percentage and remove the low and from the side chain is a big plus to creat big and impressive sound. Love it and highly recommend!

      A. Viktorovich

      14. November 2022

      Great of 2500

      One of the most beloved compressors

      D. Lee

      14. Oktober 2022

      Sounds great subtle or aggressive!

      I'm a fan of this. My favorite drum bus comp!

      N. Liebich

      14. August 2022

      Like the hardware

      I’m happy to own the HW of this… but the Plug-in is the real deal and so much more handy! Going to sell the HW!

      I. Papagiannidis

      18. Juli 2022

      The best for mixbus

      Perfect for mixbus and almost every source! The weight and lows it gives to drums are amazing! Combined with distressor is a grate combo!