The PCBuilder CAST CORE is a USB gaming microphone built for streamers and content creators who want a genuine upgrade over a headset mic without stepping up to a full studio setup. It uses a cardioid polar pattern — picking up sound clearly from directly in front of the mic while rejecting noise from the sides and rear — which keeps voice chat, commentary and stream audio focused on the speaker rather than picking up keyboard clatter, fan noise or other people in the room. At its core sits a 14mm capacitive microphone element covering a 30Hz-18kHz frequency range with a sensitivity of -42dB±2dB at 1kHz and support for 48kHz/96kHz sampling rates, giving genuinely detailed, nuanced audio reproduction rather than the thin, compressed sound of a typical headset mic. A built-in sound card adds a 3.5mm headphone jack directly on the mic body for real-time, zero-latency monitoring of your own voice while recording. The stand is tilt-adjustable, and ambient RGB lighting adds a visual streaming-desk touch; it connects over USB Type-C and comes with a threaded adapter for standard boom arms and tripods.