Schaack Audio Technologies is a Luxembourg-based audio software developer founded in 2007, specializing in VST and Audio Unit plugins for Mac and Windows. The company is best known for its Transient Shaper, a dynamics processor designed around just two knobs — Attack and Sustain — that ranges from gate-like behavior to compressor-style envelope shaping, and which has become a go-to tool for drum and percussion processing in mixing.

The company's catalog also includes AnalogQ, an equalizer plugin modeled on classic analog EQ behavior, and QuadraChor, a chorus and modulation effect inspired by the Novation Supernova synthesizer and developed in collaboration with trance DJ and producer Sean Tyas. Earlier releases include Quadscratch, a digital vinyl system aimed at DJs, and Quad, an audio file management utility with metadata editing and search.

Beyond its own product line, Schaack Audio licenses technology to other developers and has worked with companies including Image Line, MixVibes, Intimidation, and Percussa, integrating its DSP work into third-party applications and hardware. The company operates as a small, focused outfit rather than a large plugin house, with a reputation centered on lightweight CPU usage and minimal-control interface design.

Schaack Audio has 2 products cataloged on Equipboard, including Transient Shaper Plugins. Their gear is featured by 7 artists, with the strongest followings in Electronic and Pop. Notable users include Chris Lake, Illenium, and KOAN Sound.