Jabra BIZ 2400 II Duo Headset UNC

The Jabra Biz 2400 II Duo UNC sits at the top of Jabra's corded contact centre range. This is the double-eared model fitted with the ultra noise-cancelling (UNC) microphone — the variant to choose when the room is loud and every call still has to sound calm and professional.

Like the rest of the corded Biz 2400 II family it terminates in a Jabra QD (Quick Disconnect) connector, pairing with the bottom cable or amplifier that matches your desk phone. If your environment is less demanding, the Biz 2400 II QD Duo NC with the standard noise-cancelling microphone is the closely related alternative; the mid-range Biz 2300 Duo QD covers tighter budgets.

Key features

• Ultra noise-cancelling microphone — the UNC variant is built for the loudest floors, keeping background noise out of the customer's ear.
• Duo wearing style covers both ears so agents stay immersed in the conversation.
• Premium Biz 2400 II build — Jabra's flagship corded contact centre series, engineered for constant daily use.
• Quick Disconnect connector lets agents unclip and leave the desk without ending the call.
• Adjustable boom arm keeps the microphone in exactly the right position, wearer after wearer.
• Flexible deployment — one headset standard across the estate, with QD cables matched to each phone or amp.

Works with

• Jabra Biz 2400 II QD Duo NC — the standard noise-cancelling variant
• Jabra Biz 2300 Duo QD — the mid-range alternative
• IP desk phones
• All headsets

Frequently asked questions

What is the difference between NC and UNC?

Both are noise-cancelling boom microphones; UNC (ultra noise-cancelling) filters more aggressively and is aimed at the noisiest environments. If your floor is moderately busy, the NC version is usually sufficient.

Do I need anything else to connect it?

Yes — as a QD headset it needs the Jabra bottom cable or amplifier that matches your desk phone (or a QD-to-USB cable for PC use). Tell us your phone models and we will confirm the right cable before you order.

Why pay more than a Biz 2300?

The Biz 2400 II is Jabra's premium corded series — choose it for the toughest acoustic environments and the heaviest daily use; the Biz 2300 remains the sensible mid-range workhorse.

Upgrading a busy contact centre? Call 0333 242 1314 or email sales@clisecure.com and we will match the right headsets and QD cables to your phones before you order.