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
March 31, 2021
Amazing Drum Compressor!!!!
I don’t usually write reviews but this one just sounds to good on the drums to not share. Most impressive feature: You don’t have to compress much to get a smooth phat drum mix....Read More
March 26, 2021
Amazing, especially for Mastering. Love it! A huge difference from other manufacturers.Read More
March 16, 2021
A must have
I was sceptical at first about getting the UA version of the 2500, quickly after using it on a mix I realize that it does not draw short on what you expect a 2500 to do. Does it sound like...Read More
March 16, 2021
Sticks it all together
I love multitracking everything. Guitars, vocals, synths, drums. This goes on all my buses to bring them all together and sound coherentRead More
March 16, 2021
this one doesnt need my approval great comp!Read More
March 14, 2021
API 2500 Bus Compressor plugin wonderfulRead More
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
Amazing Drum Compressor!!!!
I don’t usually write reviews but this one just sounds to good on the drums to not share. Most impressive feature: You don’t have to compress much to get a smooth phat drum mix. It’s now in my template for life!
Amazing, especially for Mastering. Love it! A huge difference from other manufacturers.
The 2500 from UAD emulates its analog counterpart perfectly. However, what they cease to mention in the ad (only in small letters), that when not using Console, there is latency involved. When compressing the Drum Bus, what the 2500 is mainly used for...any form of latency is highly bothersome. I own the UAD-2 Satellite Thunderbolt 3 hardware that was supposed to take CPU load off, but without console, the greatest feature of the device is unused. SHAME
A must have
I was sceptical at first about getting the UA version of the 2500, quickly after using it on a mix I realize that it does not draw short on what you expect a 2500 to do. Does it sound like the real thing? No but it gives that same sonic reference that you can count on for your records.
Sticks it all together
I love multitracking everything. Guitars, vocals, synths, drums. This goes on all my buses to bring them all together and sound coherent
this one doesnt need my approval
API 2500 Bus Compressor plugin wonderful
Drum Bus Magic
The best I've found outside the hardware
Un vrai régal sur une snare, incisif sur des chants et un vrai "make up" pour un stéréo, bref un compresseur "solide" !
Accurate and versatile
I used the waves version which is great, but this plugin is one step above and close to the hardware. It’s fantastic, accurate, nice graphics and lot of features. You could use it for almost everything, not only for bus compression. Very versatile and realistic.
The 2500 is a staple and while im a bit late to getting this plugin its by far the closest to the gear out of any 2500 plugin. Just listen to the body in those transients. I remember when this was released it truly speaks for itself in the advancements UA has made over the years.
API 2500 Bus Compressor super+
API 2500 Bus Compressor plugin wonderful )))
No Gimmick !!
OK the question everybody asks is : versus the Waves (witch is great by theway) BUT that said , waves is kinda vulgarous and exagerate the transient snap to mimick punch of the orginal HW : this leads to some cliky transient that are NOT here on the HW , thks to Transformers ... there come the UA one : Punch / body , without being vulgarous , and the timing is just on point , react like a HW simple as that .... MUST HAVE with the SSL G comp , the rest is bonus !!
very versatile bus compressor! replaces the SSL bus compressor in many situations and works just as fine on single channel guitars and drums. first choice!
API 2500 BUS COP
BUY IT USE IT GET BETTER ITS TOO GOOD FOR A PLUGIN, NICE ONE UA
Depth, Punch, Width and Clarity!
Great tool for adding amazing depth and punch to drums and the mixbus!
Great sounding with many options. Works great on the master bus as well as on individual tracks. It boosts quite a bit of presence which works great on some mixes, and not so well on others. But when it works, it works wonderfully.
This is it.
Best Drum Comp
This is a must have if you're searching for a fast drum mix glue and transient enhancer. The parallel compression feature is very useful if you only want a hint of the API. Works great on 70' and 80's stuff, especially on real drums or hybrid combinations between drum machines and real drums.
It's also great on the master chain if you're mixing EDM.