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The preferred vocal compressor for pop, hip‑hop, and R&B.

Developed by Softube, the Tube-Tech CL 1B MkII plug-in for UAD hardware and UA Audio Interfaces is an update of this iconic optical compressor used by modern artists like Kanye West, Rihanna, Jennifer Lopez, and more.

Featuring numerous sonic enhancements and new high-resolution graphics, the Tube-Tech CL 1B MkII plug-in has been reimagined with Softube's latest component modeling and signal processing technology, for an even deeper emulation than before — capturing this modern classic in all its tube glory.

Track and mix with an updated emulation of a modern classic compressor, fully endorsed by Tube-Tech, Denmark

Enhance transients and retain dynamics with new Parallel Compression and Sidechain Low Cut controls

Add musical-sounding compression to vocals with the same “go-to” unit preferred by Kanye West, Rihanna, and Jennifer Lopez

Dial-up weight and tube character on drums, bass, acoustic guitars, and vocals

A Modern Opto

A Modern Opto

A studio staple across a variety of genres, the Tube Tech CL 1B takes the classic warm opto compression recipe and modernizes it with selectable Fixed, Manual, or Fix/Man attack and release settings, making it useful on myriad sources. From soft and gentle massaging of a vocal to accentuating punch and snap on drums or guitars, the CL 1B's vintage/modern approach to dynamics control make it a go-to compressor for pop royalty.

Added Versatility

Added Versatility

The new Parallel Compression control lets you easily blend in compression on a drum loop or lead vocal, while the added Low Cut Sidechain feature keeps your sources punchy by keeping greedy low end away from your compression threshold.

Stylish New Graphics

Stylish New Graphics

Along with the revamped sonics and added features, now you can tweak your CL 1B MkII from a new point of view with bold high-res graphics that pop — especially on 4K or Ultra HD screens.

Key Features

An updated emulation of a modern classic opto compressor, fully authenticated by Tube-Tech, Denmark

A legendary go-to vocal compressor for major pop, R&B, and hip-hop artists from Kanye to Jennifer Lopez and more

Added flexibility with new Sidechain Low Cut and Parallel Compression controls

Updated hi-res graphics for 4K and Ultra HD screens

Customer Reviews

Tube-Tech CL 1B MkII Compressor

Overall Rating

D. Range

April 26, 2023

horrible customer service and product deserves a zero unusable still in 2023

Ive had these for yrs and finally figure out this was the plug in causing all the issues in studio one and my mixes I Put in a ticket and they contact me and the dude acts like he doest know what the hell im talking about when its all over the forums etc This is a garbage product that's broken. I have never been so dissapointed with a product but the customer service come on bad this is pathetic

k. Habib

April 15, 2023

5 Gründe warum du diese Plug in kaufen solltest

Also, ich habe kürzlich das Tube-Tech CL 1B Mk2 Compressor Plug-In ausprobiert und ich muss sagen, dass ich wirklich beeindruckt bin! Hier sind fünf Gründe, warum ich denke, dass es ein großartiges Tool ist:

1. Der Klang ist fantastisch! Es verleiht meinem Audio eine warme, vollmundige Klangqualität, die meinem Mix eine natürliche Tiefe und Dimension verleiht. Es funktioniert wirklich gut, um Vocals, Gitarren, Drums und andere Instrumente zu glätten und zu formen.

2. Es ist super einfach zu bedienen. Obwohl es viele verschiedene Einstellungen und Optionen gibt, fand ich die Benutzeroberfläche sehr intuitiv und einfach zu navigieren. Ich konnte schnell den Klang anpassen, den ich wollte.

3. Es ist sehr flexibel. Das Plug-In bietet viele verschiedene Einstellungen und Optionen, um den Klang genau nach meinen Wünschen zu gestalten. Ich konnte die Kompressionseinstellungen, den Attack- und Release-Zeitpunkt und vieles mehr anpassen, um meinen Sound perfekt zu machen.

4. Es ist sehr zuverlässig. Ich hatte keine Probleme damit, das Plug-In in meiner DAW zu verwenden, und es funktionierte immer reibungslos. Ich kann mich darauf verlassen, dass es mir immer den Sound gibt, den ich brauche.

5. Das Preis-Leistungs-Verhältnis ist großartig. Obwohl es nicht billig ist, denke ich, dass es ein tolles Preis-Leistungs-Verhältnis bietet. Die Qualität des Klangs, die Flexibilität und die Zuverlässigkeit machen es zu einer Investition, die sich wirklich lohnt.

Insgesamt bin ich wirklich begeistert vom Tube-Tech CL 1B Mk2 Compressor Plug-In. Ich denke, es ist ein großartiges Tool für jeden, der nach einem hochwertigen Kompressor sucht, um seinen Sound zu verbessern. Es komm nah an das original und das ist nur meine Meinung und selbstverständlich darf jeder sich ein Bild machen in dem er es austestet für sich. Kreative Grüsse Kmalectro

M. Pitts

April 14, 2023

This in every top tier vocal chain

One of the best compressors.... you also get the Tube-Tech CL1B when you purchase this product. Something small, but appreciable touch. Can't complain!

o. ortiz

April 10, 2023


u sold me a plug-in with many problems n bugs that yet have bin fixed, not cool ,F,You

UAD User

April 3, 2023

Tube tech cl1b

Warm fat beautiful sounding compressor instant change when applied

N. Kernizan

March 26, 2023


This is perfect

T. Hawkins

March 26, 2023

Only compressor I use

If you don’t have this compressor, then get this compressor. This compressor right behind the neve1073 is pure magic

j. dominguez

March 20, 2023



D. Martinez

March 15, 2023

Nice and warm

Title says it all. This thing will definitely get the job done for either recording or any post work.

D. Felix

March 8, 2023


I started a trail with this plugin and i had to purchase the next day of using highly recommended

J. Soerensen

February 18, 2023

Very warm and musical

I really like this plugin, I've used the hardware version in the late nineties and early 2000's and it was my go to compressor. Now I can use multiple instances in a mix, and it sounds awesome.

Z. Abresch

February 17, 2023

Very musical and warm compression

I love this on synth tracks to give some warmth. The sidechain filtering is really effective. Fixed attack & release makes it truly set & forget.

N. Merrick

February 16, 2023

Very good.

I have owned and used real Tube-Tech CL 1Bs for years. This is a great plugin!

Y. Worontschak

February 1, 2023


Possible the most usable comp out there

A. Fotakis

January 30, 2023

Very good!

Nice plugin

F. Biagiotti

January 28, 2023

Impressive quality

Impressive how just processing vocals on it just improves 'em, giving them body without ruin all the other aspects, super recommended.

M. Oehmke

January 15, 2023


One of the best compressors <3

n. Kanchanawat

January 14, 2023

Great and a standard

1176,la2a, cl1b…. There’s a reason these are the industry standard

F. San Filippo

January 14, 2023

If you have the 1176, Fairchild, and LA-2A collections, you might consider this next.

A wonderful cross between a Fairchild and an 1176 -- has the controls of an 1176 but the more responsive nature of a variable mu compressor. You can get by without it, and the controls are a little funky and overly sensitive around the sweet spot of the threshold. But it sounds good. Would be nice to have a gain in and out of the plugin, like the native Softube version.

a. vanpourse

January 14, 2023

Has That Lovely Musical Compression You Hear In Hiphop Tracks

It has that musical compression I hear in HipHop Music...Glad I purchased It