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Widen your mixes and recover the natural ambience of your recorded sources.

The Precision K-Stereo Ambience Recovery plug-in for UAD-2 and Apollo interfaces allows you to precisely enhance the stereo depth and imaging of your mixes without unwanted artifacts.

Created for the UAD platform with famed mastering engineer Bob Katz, the Precision K-Stereo plug-in is designed for critical 2-track mastering applications — from jazz to rock to hip-hop — and is the natural-sounding cure for busy or narrow-sounding mixes.

Add depth and imaging to instruments and vocals without adding artificial reverb

Extract ambience from source material, naturally, adding depth and width to the stereo field

Harness Mid/Side gain controls adjust the center-to-side balance of mixes

Tweak further with powerful three-band Ambience Filter EQ

5-Min UAD Tip
5-Min UAD Tip

5-Min UAD Tip

In this video, learn how to widen your mix and give a drum overhead mic more of a room sound with the UAD Precision K-Stereo Ambience Recovery Plug-In.

Key Features

Unique ambience recovery and stereo processing tool, created and patented by famed mastering engineer Bob Katz
Extracts ambient cues from the source material, naturally adding depth and width to the stereo field
Perfect for fixing busy or “narrow” mixes at the mastering stage
3-band Ambience Filter EQ for further shaping the effect
Mid/Side gain controls adjust the center-to-side balance
Left/Right Gain controls for final stereo image balancing and leveling
Custom user presets created by Bob Katz
Requires UAD-2 DSP Accelerator Card or Apollo Interface, available from authorized dealers worldwide

Customer Reviews

Precision K-Stereo Ambience Recovery

Overall Rating

c. Lawrence

October 12, 2022

Great

I use this for mastering, adds great width to the music

J. Dagan

September 3, 2022

Brilliant.

Precise subtlety is not something companies usually focus on when making a new plugin.
Lots of elegance and musicality in the design of this. a rare kind.
Thanks Bob and UAD

G. Schwab

August 23, 2022

Very good tool!

I use this tool to design the stereo depth and stereo width. A few subtle attitudes already lead to fine results and success. The user interface is very clear and explains itself. The sound results are very good!

UAD User

August 14, 2022

Wish I never bought it

Snake Oil

K. Holley

July 29, 2022

Works don’t over saturate the signal

Like all signal processors via hardware or software it depends solely on the goal of the mixing engineer. This has a place in my toolbox.

H. Studios

July 13, 2022

Must have plugin.

This is a very unique plugin but extremely helpful help enhance ambience. Of course the ambience and room had to already be there. It doesn’t create ambience but enhances what you’ve already recorded so it breathes more life into said recording. Love it!

S. Gauri

June 17, 2022

Sounds nice

I only know that it sounds nice.

J. Carr

June 15, 2022

Another Golden Moment

UAD Killed it again ... Thank You!

E. Green

April 7, 2022

I LOVE IT!!!

I’m creating some very nice depth with this! It’s the plug-in I’ve been waiting for! Thank you UA!!!!

l. jeffries

March 23, 2022

Love it!

Brilliant bit of kit

О. "Комаров"

January 22, 2022

Many thanks!

I feel deep respect and gratitude to the person who created this device. Many thanks!

F. Trentini

January 2, 2022

Very useful

Thank you Bob Katz and Universal Audio for this brilliant plugin. It sounds smooth and natural, I personally love it especially for mastering. Very useful tool.

S. Harris

December 29, 2021

Like magic

doesn't seem to work on every type of material, but when it does, it's like magic. widening is subtle, but extremely natural and doesn't mess with the stereo image.

C. Szekely

December 16, 2021

A Little Goes A Long Way

This is one of those products where just a little bit goes a long way. I use this plug-in as a stereo widener only, I don’t use the ambience recovery feature at all. Maybe I will down the road. I compared this plug to several other stereo wideners Including the JST Sidewidener, Izotope’s Stereo Imager, Goodhertz Mid-Side Matrix and Logic’s native stereo directional plug among others and this one did the best job of making it sound huge while still being undetectable unless you A/B it with the unprocessed audio. I just lower the mid a decibel or two, raise the sides a half decibel or so, set gain compensation and BOOM! This plug will most likely be on all my master chains from now on. Love it.

Z. Mo

December 13, 2021

Secret Weapon

Superb, spot on controls , but beware , you'll so love that you'll over abuse it easily .... i did lol

c. siebert

December 9, 2021

Skeptical at first...but

I wasn't quite sure about this , I'm a bass player and after using it boom instant depth and width

UAD User

December 9, 2021

great

nice plug to get more clear

V. Pop Hristov

December 1, 2021

glowing cherry

if u ask me,when u r making a cake,this is the cherry that u put on the top

A. Lindelöf

November 22, 2021

Great polish

I think this plugin is great for adding that final subtle polish to a master. I use it together with the Precision Maximizer to create the master tracks, and it makes a good mix even better. Highly recommended.

J. Reichert

November 15, 2021

Precision K-Stereo Ambience Recovery!

The Precision K-Stereo Ambience Recovery is the secret weapon I didn't know I needed until I tried it.