THAT Corporation is a privately held semiconductor company specializing in high-performance analog integrated circuits for audio applications. It was founded in 1989 as a spin-off from dbx, Inc., and is headquartered in Milford, Massachusetts, USA. The company focuses on designing ICs that deliver extremely low noise, wide dynamic range, and high common-mode rejection, catering to the professional audio and broadcast markets. Its core product lines include the THAT 1500/1510 series of microphone preamplifier ICs, the THAT 1200/1203/1240 series of balanced line receivers, and the THAT 1606/1646 series of balanced line drivers. Additionally, THAT is known for its voltage-controlled amplifier (VCA) family, such as the THAT 2180/2181 series, which are widely used in dynamics processing and automated mixing consoles. The company also offers the THAT 4301 Analog Engine, which combines a microphone preamp, VCA, and RMS detector in a single chip. In terms of industry position, THAT Corporation is a niche leader in high-end analog audio ICs, with its components found in top-tier recording consoles, outboard gear, and professional audio interfaces. Although small compared to major semiconductor firms, it holds a strong reputation for audio performance and has become a de facto standard in many professional audio designs. The company continues to innovate with new generations of audio-grade ICs that meet the evolving needs of premium audio equipment manufacturers.