The Sennheiser MKE 400 is a compact, highly directional shotgun microphone designed to significantly improve the audio quality of DSLR cameras, mirrorless cameras, and camcorders. As a B-stock item, it has been factory inspected and recertified to perform like new, potentially with minor cosmetic signs of prior use. The microphone features a supercardioid (line+gradient) pickup pattern that focuses on sound originating from the front while effectively rejecting ambient noise from the sides and rear. This directionality is crucial for isolating dialogue and primary sound sources in noisy environments, making it an ideal tool for videographers, journalists, and content creators filming interviews, documentaries, or narrative work on location.

The microphone is engineered for ease of use and integration with modern camera systems. It mounts directly onto the camera's hot shoe via an integrated shock mount, which minimizes handling noise and vibration transmitted through the camera body. It operates on power from a single AA battery, providing up to 300 hours of operation, or can be powered via the camera's 3.5mm mic jack if it supplies plug-in power. The MKE 400 includes essential controls such as a three-position sensitivity switch (low, medium, high) for optimal level matching with the camera's input, a low-cut filter to reduce wind rumble and low-frequency hum, and a dedicated power switch. An LED indicator provides clear status feedback for power and sensitivity settings.

Despite its small size, the MKE 400 delivers a clear, balanced audio character with a slight presence boost to enhance speech intelligibility. It comes with a foam windscreen for basic wind protection and a furry windjammer for more demanding outdoor conditions. The plug-and-play design requires no complicated setup, making it an accessible upgrade from built-in camera microphones. As a recertified product from a leading audio manufacturer, the Sennheiser MKE 400 offers filmmakers a cost-effective path to achieving professional-grade, directional audio capture directly into their camera, greatly enhancing the production value of their video projects.