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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.

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

G. Schwab

September 17, 2022

A very musical EQ

This EQ delivers very musical results. It sounds, carefully applied, warm and detailed at the same time.

G. Schwab

September 17, 2022

A very musical EQ

This EQ delivers very musical results. It sounds, carefully applied, warm and detailed at the same time.

O. Levi

August 28, 2022

Vocals

This just levelled up my vocals, I through this in my vocals buss and bam! Magic.

M. Vikman

August 15, 2022

New API user

I just got API and it has helped me a lot to find quickly the sound you want. .
it`s easy to use!
Best wishes from Finland
M.Vikman

C. Romagnoli

August 10, 2022

Must have!

Epic punchy sound!

A. Rodriguez

July 26, 2022

UAD, Please Allow Your Plugins to be Resized!!!

I am giving this 1 star because here we are in the year 2022, and UAD plugins are still not resizable in Pro Tools. Come on, even $29 Waves plugins are resizable. It looks very unprofessional to have 50% user interface and 50% blank space in the plugin window.

Also, please add code that detects which plugins I own and only add those to Pro Tools rather than forcing ALL of your plugins on Pro Tools. Again, here we are in the year 2022. There is no excuse for this.

M. Peak

July 11, 2022

Always Useful

Even before any changes are made to settings, the EQs add something special to the sound. Just sitting in the signal chain instantly works. The 550A works to provide that good overall API shaping and the 560 can really take adjustments to extremes if needed. Using both the 550A and 560 in a single signal chain can be really effective. You can get both EQs in the Vision Channel Strip, but if you don't need the entire strip, this collection works just fine.

The only real downside is UA doesn't yet offer a native version (at the time of this review) and I'm hoping that will change.

Y. Larkin

July 2, 2022

Still not resizable......

Both do sound great. But the 560 raises the volume level without even dialing any EQing in and what keeps on frustrating me with UAD Plugins, is that they are still not resizable ! It‘s 2022 !
As a costumer, having already invested in the UAD hardware to be able to use the plugins, plus investing money in the software products, think that it should be surely possible for you as a company, to fix that issue. Please.

UAD User

May 28, 2022

So good

The graphic lives on my mix bus with everything at zero.

B. Bartholomew

May 26, 2022

Quality.

1. Just putting it the chain does something positive. 2. The gain does something positive too, it brightens the sound but not in a tube saturation type way, a presence that I can only describe as creamy. 3. The actual EQ is superb. No digital harshness, so smooth. The hard part would be to actually pull some bad results out of the plug in. Well done UAD, 5 stars.

G. Castle

April 24, 2022

Great Plug-Ins

I use UA API Plug-Ins on almost all of my Country mixes to get a clean and punchy mix.

A. Kinnear

March 23, 2022

API perfection

Wasn’t sure about the effectiveness of this product but it’s beyond my understanding how they captured the quality is beyond me .. used on everything it’s a masterpiece!

M. Oehmke

January 30, 2022

API 500 Series

API never disappoint. The real deal UA. Thank you

J. Gravel

January 25, 2022

Api Eq

Api legendary punchy sound!

Y. Chistyakov

January 20, 2022

API 500 Series EQ Collection

Sehr gute Sammlung von Eq, warmer Klang, anwendbar auf alle Instrumente und Gesang.

P. Jonsson

January 14, 2022

A classic

It's a classic for a good reason

Z. Threadgill

January 13, 2022

Love it

I use it on my vocals on almost every mix to bring up the highs without being harsh. GREAT plugin!

T. van Vliet

January 11, 2022

Gets the job done

Wow was my first response when trying this collection. Mixing has become a bit easier with this software gear. Presets are very useful, but if you prefer to tweak, all options are there with a clear user interface. EQ is favorable for bass and vocs to me. A musthave,

R. Byers

January 9, 2022

This EQ vibes

Put some muscle in your guitars or give your overheads some shine or work your vocals - this is a versatile collection and I love being able to stack the 550 and 560

M. Bláha

December 24, 2021

API 500 EQ Collection

Nice colourfull EQ!