The C-Media CMI9739A is a legacy audio chipset produced by C-Media Electronics, a Taiwan-based company known for manufacturing audio processing solutions. This chipset was commonly integrated into motherboards or sound cards, primarily during the early 2000s. It provided audio processing capabilities for computer systems.

Key features of the CMI9739A included support for 6-channel audio, which was suitable for delivering immersive sound experiences in games and multimedia applications at the time. It also offered 3D audio and positional audio support, contributing to a more realistic soundstage.

While the CMI9739A was popular during its era, it has become obsolete as newer and more advanced audio technologies have emerged. Modern computers now incorporate high-definition audio solutions, and sound processing has advanced significantly since the CMI9739A's heyday. Nevertheless, it remains a historical part of early PC audio technology.