Jabra Biz 2400 II Duo QD Wired Headsets

Jabra Biz 2400 II Duo, NC

The Jabra Biz 2400 II Duo, NC is a professional stereo headset built for all‑day calling in busy environments. The “Duo” means dual‑ear (stereo) – perfect for immersive focus. “NC” stands for noise‑canceling microphone, which filters out office chatter, keyboard clicks, and HVAC hum so your callers hear only you. The Quick Disconnect (QD) connector lets you unplug from the cord without removing the headset – ideal for stepping away from your desk. With leatherette memory foam ear cushions, a padded headband, and wideband audio, this headset delivers comfort and clarity for call center agents, remote workers, and power users.

How It Works

Connect the RJ9 plug to your desk phone’s handset port or to a Jabra Link adapter for PC use. The Quick Disconnect (QD) lets you detach the cord while keeping the headset on – walk to a printer or file cabinet without missing a beat. The noise‑canceling microphone boom rotates 270° for left‑ or right‑side wear. The stereo speakers provide wideband audio (150Hz–6.8kHz) for natural, detailed sound. The inline control pod gives you volume, mute, and call answer/end. For a complete hands‑free setup with your computer, pair this headset with a Jabra Link USB adapter – check out our selection of corded headsets at FindHeadsets for more options.

Compatibility & Design

The Jabra Biz 2400 II Duo works with most desk phones (RJ9 handset port) and with PCs via Jabra Link adapters (sold separately). It is compatible with all major softphones when used with a USB adapter. The headband is adjustable and padded, and the ear cushions are leatherette over memory foam – replaceable (10‑packs available). The headset is black, weighs approximately 5 ounces, and the cord is 1.8m (6ft) coiled, stretching to 3m. The microphone is noise‑canceling (up to 20dB reduction). The “II” version features improved speakers and durability over the original Biz 2400.

Why Choose This Product

The Biz 2400 II Duo strikes the perfect balance between professional call quality and all‑day comfort. The noise‑canceling microphone is exceptional – it blocks background noise so you sound professional in any environment. The stereo design helps you catch every word, and the leatherette cushions stay comfortable for 8+ hour shifts. The QD connector is a lifesaver for multitaskers. For IT managers, this headset is durable, with replaceable ear cushions and a reinforced cord. Compared to basic mono headsets, the stereo version gives you a much better experience for long calls and multimedia.