Tube-Tech CL 1B MkII Compressor

Tube-Tech CL 1B MkII Compressor


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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.

Now You Can:

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. Martin

August 29, 2020

As close to hardware as you can get

Of all the plugins I own (from all manufacturers), this is one that is as close to the hardware as you can get. Very responsive and easy to use. If you've ever used a CL1B, you know that dialing in a balance between Att/Rel can go smoothly or extreme, but once you find the sweet spot, you're completely satisfied.

D. Hampton

August 27, 2020

I like the two verison you get, it definitely has it own flavor. The legacy sound more beefy to me, while the MKII has more mid range when using the compressor. I have them both of different vocal chain, with different preamp and mic setting with the Townsend Labs Sphere. Cop it!

N. Bluhm

July 23, 2020

This one is for vocals.

Opto compressor but more on the modern & transparent side. This is now one of my go-to vocal compressors. Just a couple dB reduction during tracking sounds great.

K. Han

July 14, 2020

Must have~!!!

You can find any professional studio, and all vocals need this~!!

e. gudul

June 15, 2020

Very good for vocals

Great warm sounding, but very sensitive.

UAD User

May 22, 2020


The new build is great. Really smooth and clear on male vocals, and adds the perfect amount of sparkle to any chain. GREAT!

A. Gonzalez

May 15, 2020

The greatest compressor ever

I just simply can’t explain how much I love its sound!

W. Pruksavanich

May 12, 2020

Great Compressor Plugin.

I use it with my saxophone sound. It gives my saxophone sound warmer and more colourful, so it's easy to blend with other instruments. From now on, it will be on my saxophone track until I close the program!

A. Geisler

May 7, 2020

Perfect Compressor for Vocals and Percussive Instrument

If you have a super smooth vocal sound and the sound need more grip inside the mix... with the CL 1B the vocal find its position in the mix! Drums and bass can also become perfect with this compressor. Perfect is the mix function for parallel compression!

B. Gotch

May 6, 2020


This is my Swiss army knife

J. Mattingly

April 19, 2020

Love this Compressor!

I’m a big fan of the CL-1B and this plug in is really close. I’m not sure that it’s not as good as the analog piece. Love it! Smooth!

P. Rackley

April 18, 2020

Incredible and smooth

This compressor is everything that the hype is about. I see what the craving for this piece is on vocals. Awesome!

j. Lee

April 14, 2020

컴프레서 제대로 써보시고 싶으시면 이겁니다.

보컬에 걸어보니 정말 소리가 찰지고 좋다. 이런 표현 영어로 못해서 한글로 쓴다. 이 리뷰 검수하는 사람들 번역기돌려도 제대로 번역이 안될텐데 아쉽다. 기타 연주자라 기타에도 사용해봤는데 훌륭하다.


April 3, 2020

Yes Sir!

Finaly what my vocals needed.

J. Garner

March 27, 2020

Love it on vocals !

Got the demo and instantly fell in love with this plugin ! Go to for sure !

C. Arceneaux

March 24, 2020

Amazing compressor

This is such a great sounding compressor. I love it on vocals and room mics on drums and acoustic guitar and piano. It has this wonderful warmth to it.

F. Lockwood

March 10, 2020


Excellent et impressionnant !

t. taeksu

December 30, 2019

꼭 필요한 플러그인이다.

Great and great product but expensive
I can only buy with tears

t. taeksu

December 30, 2019

매우 융이한 플르그인중 하나여서 샀지만

Great and great product but expensive
I can only buy with tears

J. Steffen

December 22, 2019


Generally I always used the 1176 on vocals until I demoed this and then bought in 10 minutes after. Fast attack and fast release all of the consonants pop right out on vocals making the vocalists words crisp and present in the mix, I have heard any other compressor do this. I can’t get that with any other compressor on vocals. This is now my go to compressor on vocals, even over the Distressor. This with the VSM-3 sitting behind it and your vocals will cut right through the mix with no problem.