A4Tech Bloody B140N wired gaming keyboard

The A4Tech B140N wired headset with USB connection and adjustable microphone provides a practical audio solution for voice communication and multimedia use. The headset uses a USB connector for plug-and-play operation with most modern computers and offers an adjustable boom microphone to position the capsule for clear voice pickup. Its design focuses on straightforward connectivity and reliable speech transmission for remote work, online meetings and VoIP calls.

Advantages

The USB connection eliminates the need for separate audio jacks and enables easy setup on Windows and other systems that support USB audio. The adjustable microphone boom lets users place the microphone near the mouth to reduce background noise and improve speech clarity. Lightweight on-ear cups and a simple headband provide comfortable, all-day wear for extended online sessions, while wired power ensures stable audio without battery dependency.

Suitable for

• Remote work and home offices
• Online meetings and video conferencing
• VoIP and softphone calls
• Language learning and online tutoring
• General computer audio and multimedia playback

Key specifications

• Connection type: USB plug-and-play
• Microphone: adjustable boom microphone for directional voice pickup
• Form factor: wired headset with on-ear cups and headband
• Compatibility: standard USB audio support for desktops and laptops
• Power: bus-powered via USB (no batteries required)

How to use

Connect the USB plug into an available USB port on your computer. The operating system should detect the headset automatically and select it as an audio input/output device; if needed, choose the headset in system sound settings or in your communication app's audio preferences. Adjust the microphone boom so the capsule is positioned close to the corner of your mouth, angled slightly to avoid breath noise. Set the input volume in the system or application to achieve clear voice levels without clipping.

Recommendations

For best voice quality, keep the microphone within 1–3 cm of the mouth and avoid direct breath onto the capsule. Use the headset with the latest audio drivers and verify device selection in conferencing software before starting calls. Store the headset in a dry place and avoid excessive tension on the cable to prolong service life.