The AKG CGN-99C/S is a professional condenser gooseneck microphone designed for fixed-installation applications where clear, intelligible speech reproduction is critical. It is commonly used in conference rooms, boardrooms, courtrooms, houses of worship, and lecture halls for capturing discussions, presentations, and proceedings. The microphone features a compact, low-profile capsule mounted on the end of a flexible, internally wired gooseneck. This design allows the microphone to be precisely positioned towards the speaker while remaining discreetly attached to a table or lectern surface, minimizing visual obstruction and keeping the microphone out of the line of sight.

The "C/S" designation often refers to the microphone's specific polar pattern and termination. The microphone typically employs a cardioid pickup pattern, which focuses on sound coming from the front while rejecting ambient noise and feedback from the sides and rear—a crucial feature for high-gain sound reinforcement systems. As a condenser microphone, it requires phantom power (usually 9-52V) supplied by the connected mixer, amplifier, or interface. The gooseneck itself is sturdy and holds its position firmly once adjusted, allowing users to direct the capsule optimally without it sagging or drifting over time.

The microphone is designed for durability in high-use environments. The gooseneck is covered in a durable, black mesh, and the capsule is protected by a robust grille. Termination is usually via a standard 3-pin XLR connector, which plugs directly into a floor box, table connection panel, or inline cable. Some models may include an integrated on/off switch or LED indicator on the base. By providing a reliable, high-quality, and positionable microphone solution, the AKG CGN-99C/S facilitates clear audio capture for both live reinforcement and recording, supporting effective communication in formal settings.