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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

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

Tube Tech

One of the best compressors

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

K. Thura

January 11, 2023

Natural Compression

Great on vocals.

j. king

January 6, 2023

Excellent compressor

Tube -Tech CL 1B is the only compressor you will ever need for vocals and everything else

F. Massidda

January 6, 2023



c. rosario

January 5, 2023


Love it
When you need that classic warmth

M. Zito

January 3, 2023


Great on vocals!

L. Moreno

January 3, 2023


No me funcionan los presets

T. Stankiewicz

December 29, 2022

One of the top compressors

Perfect pair with Avalon.

T. Aras

December 24, 2022

I Love it !!!

i'm still in Love with this Tube Tech Comp!!!!!
I Use it for Vocals

T. Friesecke

December 24, 2022


Such a sweet compression - like it so much for vocalchains.
New go-to-tool!


December 24, 2022

Tube-Tech CL 1B Candela...

lo adquiri para grabar ponerlo en la consola UAD un buen complemento


December 23, 2022


Lo adquiri para grabacion utilisandolo en la consola UAD gran complemento.

S. Leathers

December 19, 2022

CL 1B Completes My Vocal Chain!

I can't remember yesterday but I remember every project since purchasing the CL B. All productions now sound official. Compression is natural feeling and complete my vocal chain.

W. Jackmore

December 15, 2022

Real natural Compression

Breaths so much life into vocals and acoustic instruments