API® 500 Series EQ Collection

API® 500 Series EQ Collection


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The world’s most accurate
emulations of API’s legendary EQs.

The API 500 Series EQ Plug-In Collection for UAD-2 hardware and Apollo interfaces faithfully captures the punch, low-frequency transparency, and ultra-tight imaging of API’s iconic 550A and 560 Series EQs.

With unique filter shapes, complex band interactions, and musical filter amp distortions, the 550A and 560 Series EQs left an indelible stamp on legendary recordings of the ’60s and ’70s. Painstakingly modeled on pristine early-’70s units provided by Ross Hogarth and Capitol Studios, the API® 500 Series EQ Collection gives you stunningly accurate, end-to-end modeling of these revered EQs.

Now You Can:

Track and mix with full-circuit emulations of API’s iconic 550A and 560A EQs

Harness API’s musical filter amp distortions and musical clipping behaviors

Use API’s proprietary “Proportional Q” for more precise control over your sources

Mix with artist presets from Ross Hogarth (Van Halen, Mötley Crüe), Darrell Thorp (Beck, Radiohead), and Vance Powell (Jack White, Kings of Leon)

550A Parametric EQ

550A Parametric EQ

Introduced in 1971, the 550A was the standard channel EQ module on API's first consoles.Its three overlapping bands of parametric EQ, independent 50 Hz to 15 kHz band-pass filter, and individually selectable peaking or shelving modes make it the perfect tool for getting drums and guitars to stand out in the mix.

560 Graphic EQ

560 Graphic EQ

With ten bands of graphic EQ, the 560 EQ is ideal for shaping your mix with surgical precision. API’s proprietary “Proportional Q” intuitively widens bandwidth at lower boost/cut levels and narrows it at higher levels, giving you more musical control over precise bands of your mix.

Key Features

Superior, licensed plug-in emulations of the most enduring API 500 Series EQs
API 550A discrete, 3-band bell/shelf parametric equalizer
API 560 discrete, 10-band graphic equalizer
Models the entire electronic path, including custom API 2520 op-amps and transformers, band interactions, and internal clipped filter distortion
Licensed and endorsed by Automated Processes, Inc.
Includes presets from famed engineers and producers, including Vance Powell, Ross Hogarth, Carl Glanville, Jeff Juliano, Eli Janney, and Darrell Thorp

Customer Reviews

API® 500 Series EQ Collection

Overall Rating

R. Attias

February 10, 2020

Hit the ground running.

Wow, love the ease of use of these EQs. They quickly and easily brought the vocals, drums, bass, and guitars, right onto their sweet spot on my mixes.

R. Invernizzi

December 28, 2019

Love the API sound

I love the API sound. I use a lot the 550A and also the API 2500 for the great sound and glue that gives me on my mix.

x. zuniga

December 25, 2019


Best ever !!

x. zuniga

December 25, 2019

Great !!

Best ever !

M. Kempter

October 2, 2019


Sitting in front of a dull Mix to Master, just playing around with a grabing EQ like the 560 to get a direction by taste and whow. That 560 does not leave the chain.

J. Poole

August 20, 2019

Every now and then...

Every now and then API really shines on guitars and drums. On a few occasions it even works with vocals. My main eq's are API, Oxford, Massenburg, Dangerous, Manley, Brainworx, all of which contribute something to every genre of music...6 flavors to rule them all...

D. Brown

July 20, 2019


yes to api

J. McCann

July 14, 2019


I use the 560 at the end of my vocal chain and it brings my vocals to life. The best “polish” eq I have in my chamber and trust me I have many!

p. garcia

July 1, 2019

La mejor simulación de Api

La mejor simulación de Api que he probado jamas, sin ninguna duda.

I. Goraczkowski

June 26, 2019

Just Best of ALL

...If youre sound is lifeless just put it on youre track and play with it...Nothing more to add ...MAGIC

T. Lockett

June 23, 2019


I now have all of UA API plug ins
They are IMO the best sounding software emulations of the hardware... really sounds good

T. Lockett

June 23, 2019


I now have all of UA API plug ins
They are IMO the best sounding software emulations of the hardware... really sounds good

S. McClain

June 21, 2019

API 500 Series EQ Collection

This by far the best purchase I have ever made. I truly love the clarity and sound of these EQs. It great on instruments especially drums. Purchase this collection and you will not be let down AT ALL. Thank you Universal Audio for the hard work and sound that you created for us. Much love to you all.


June 19, 2019



A. Kharkov

June 16, 2019


Thanks UAD team!!!
Amazing EQ the API 500 Series just makes things sound right!

N. Jensen Stilborg

June 14, 2019

Great EQ

Great sounding EQ's. Killer on Drums and Guitar. Easy to dial in. It's awesome working in the console software and committing.... Old school. I'm really digging the new workflow.

S. Peterson

June 14, 2019

Of course it sounds great!

It's an API, of course it sounds great!

E. Lee

June 14, 2019

Love them

Sound amazing, just like my 500 series, super useful and dsp light

P. Daly

June 9, 2019

API 500 Series EQ

Simply turning on the 560 could be enough.... seriously! Must have

R. Gun

May 13, 2019

API sound

I dislike grafic EQs but sound good nevertheless.
It forces me to by the Hardware...