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LHI Audio ST4b 1.0 Screenshot
ST4b is a multi-band transient shaper, but cooler.

To be blunt: if you've been underwhelmed by transient shapers or never found a use for them, this is the transient shaper for you. It gives you the ability to reshape sounds in ways that no other tools can, regardless of the genre you're working in or whether your material is sampled or synthesized.

ST4b's proprietary detection algorithm gives you control over even the fastest attacks – electronic drums, foley, raindrops, even single-sample impulses (if you're so inclined). It's precise enough that even the maximum boost or cut of 45dB sounds crisp and clean, and a smart auto-gain means you're not constantly adjusting your gain staging. ST4b does it all with minimum CPU load and only 2 samples of latency.

Starting dry, alternating between wet and dry every 4 bars. No additional post processing.
Original loop credit: Shroom Samples
Starting dry and alternating to wet and back every 2 bars. All bands at full +45dB transient boost. No additional post processing.
Original loop credit: Royalston
Dry at 0:00, wet at 0:11. No additional post processing.
Original loop credit: YAANO, William Light.
0 instances, then 1 instance, then 2 instances, then 3 instances. No additional post processing.
When one just isn't enough, ST4b's low CPU usage means you can stack as many instances as you want. Go crazy.
Original loop credit: IMANU's Patreon
Dry at 0:00, wet at 0:08. No additional post processing.
Original loop credit: IMANU's Patreon

"Ever since I was sent the first version of ST4b, it’s been my transient shaper of choice. In my opinion it’s the best of its kind and I can only recommend you use it!"


Atlantic, Deadbeats, VISION, UKF, Critical Music

"ST4b is the tool i never knew i needed and now cannot finish a track without"

The Caracal Project

UKF, VISION, Critical Music, Neosignal

"This is it. The secret sauce. I’ve been slapping this son [of] a bitch on my drums for quite some time"


Deadbeats, VISION, Division, Inspected

"it's dope. had to go back over all my songs and add it in!"


VISION, Critical Music, 1985 Music

"If there is any plugin I've been using to nail my drumsound in the last year its this one. By far the most accurate transient shaper I own. So good 🤤"


Critical Music, VISION, Mau5trap, Neosignal

"ST4b is the missing piece of the puzzle for me, I use it on literally everything, from tight percussion to weird granulized effects, it is insane sounding, it is the future, it is stabbing goodness"

Maor Levi

Atlantic Records, Spinnin Records, Mad Decent, Toolroom Records, Anjunabeats, Armada

"i don't live without this plugin anymore. does absolute wonders for drums."


Critical Music, DIVIDID, Neksus Sound

"one of the craziest things to get insanely clean drums"


Ultra Records
ST4b 1.0 is now available for Windows, MacOS, and Linux.

Supported plugin formats are CLAP, VST2, VST3, and AUv2.

ST4b supports both Intel and Apple Silicon CPUs natively.

A license for ST4b 1.0 is valid for all releases until 2.0.

ST4b licenses are either per-user or per-seat. That is, a licensed copy may be used by one person on multiple computers or on one computer by multiple people.

There are no in-plugin license checks or authorisation, and, as such, ST4b releases are DRM-free.

LHI Audio ST1b in Bitwig showing multiple output buses

Your ST4b license also includes ST1b, the same transient design algorithm but in a separate single-band plugin.

In addition to the standard transient boost and cut functionality, ST1b also includes the unique feature of "splitting" the signal into transient and body and routing them independently back into your DAW.

Like what you've heard? Download the demo:

The demo version has no regular audio interruptions, dropouts, or added noise, but functionality differs from the full version in the following ways:

  1. The demo will stop processing sound after 13 minutes of use and become silent.

  2. The demo cannot load saved state in projects or from preset files. Instead, it will always load the "init" preset.

    The demo does save its settings in project files which can then be loaded by the licensed version.


Requires a GPU supporting OpenGL 3.2.

Download demo


Supports MacOS 10.9 and newer.
Universal Binary 2, for both Intel and Apple Silicon.
Tested and working on Ventura.

Download demo


Requires a GPU supporting OpenGL 3.2.
Depends on xcb, xcb-xkb, xcb-icccm, xcb-cursor, xkbfile, and xkbcommon.

Download x64 demo

Download arm64 demo
Talk about it:

For all support, bug reports, and feature requests, please send an email to support@lhiaudio.com.

If you'd just like to get in touch, drop a line to hello@lhiaudio.com.

Additionally, you can find us elsewhere on the web:

VST, VST2, and VST3 are trademarks of Steinberg Media Technologies AG