API® 2500 Bus Compressor
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.
Now You Can:
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
Take a Listen
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
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
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
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
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
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.
“The API 2500 Bus Compressor is the only piece of analog gear that’s stayed consistent with me through the years. Now with the UAD plug-in there is finally a worthy model.”
– Vance Powell (Jack White, The Dead Weather, The Raconteurs)
“The API 2500 is my all-time favorite drum bus compressor. The Punch and sound is unmatched by any other in it's class. This is a must have in any studio.”
“The API 2500 plug‑in has all the same character and punch as the original hardware.”
– Adam Hawkins (Twenty One Pilots, Switchfoot, Keith Urban)
Watch The Reviews
THE bus compressor!
Put it on the master bus, just a tiny gain reduction and a lot of the mixing is already done! Awesome...I also have the waves version, but this one sounds for me much more fuller and...続きを読む
Huge Bus compressor, apply liberally. Or just use it once. All to taste but this sounds just like the hardware.続きを読む
API makes it bang!
It makes my drums pop and brings all of my mixes together! It's the glue that binds us!続きを読む
I have the original API 2500 - The UAD Plug-In does not have to hide! Great ! Thanks UAD !続きを読む
Ce compresseur réputé apporte aux mixages stéréo et aux sous-groupes l’énergie, le mouvement et un son comme aucun autre, avec une précision absolue.続きを読む
Best Api emulation ever続きを読む
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
API 2500 Bus Compressor
THE bus compressor!
Put it on the master bus, just a tiny gain reduction and a lot of the mixing is already done! Awesome...I also have the waves version, but this one sounds for me much more fuller and rounder. Thanks UAD
Huge Bus compressor, apply liberally. Or just use it once. All to taste but this sounds just like the hardware.
API makes it bang!
It makes my drums pop and brings all of my mixes together! It's the glue that binds us!
I have the original API 2500 - The UAD Plug-In does not have to hide!
Great ! Thanks UAD !
Ce compresseur réputé apporte aux mixages stéréo et aux sous-groupes l’énergie, le mouvement et un son comme aucun autre, avec une précision absolue.
Best Api emulation ever
Best stereo bus compressor
Its great,a powerful tool on the master and bus.
Have also parallel compression
Most favorite (next do 33609 as a counterpart)
Still my be loved and first go to Compressor.
So much charakter.
But there are drawbacks too: Copaired to the analog hardware there is quit a huge sound lack and as always on the newer UAD Plugins - limited bandwith (Mastering not suitable?)
Best API 2500
I've been using this compressor from other vendors, but after demo it, I've bought immediately. Best compressor for mix metal music ever!
Buss drum heaven!
I've been using this since the day I bought it a year ago for drum buses and I can see what all the hype is about. It gives weight and presence to my drum buss and is my go to plug in!
This thing is a BEAST!
I ignored the API suite for years, thinking hey it's just for Rock music, but just tested in place of the trusty SSL G Bus Comp MKII and it's a must have. I make mostly Hip Hop and R & B and it sounded so good on the master bus when demoed I had to have it. The shape and tone controls are great and it sounds more open than the SSL to me.
Might be my new fav Bus Comp
Haven’t used yet...but it’s API...duh!
Tested it out in demo. The reviews made me finally pull the trigger.
My favorite compressor
magic when used gently
really shines doing some minor peak softening, very happy with this one on the master buss
A must buy!
Awesome compressor, I'm loving the old style colors nice my techno kicks.
a permanent fixture in my plugin chain
thank you so much for doing such a great job emulating this modern classic. it really does add depth to your mix just like the hardware.
Powerful, musical and smoothe but needs a careful hand
Not quite found the perfect setting yet but just getting started. I can feel the power in this plug in. No regrets but much tweaking to do.
Been using the hardware earlier - Now I have it in the box and love it
This was the first plugin i used that made me instatly feel using analog gear.
Not always the first choice because of the colouration and special behaviour, but the smack it makes is sweet and predictable. In this case it is of no importance if it emulates the hardware perfectly or not, it simply works well. Perfect for drums.
An excellent compressor, classic API sound...I love it!