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2309-825-109
- Description:
- Biz 2300 QD Duo Siemens - Headset - Head-band - Office/Call center - Black - Binaural - 1.075 m
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3 Year Extended Warranty
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Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
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Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
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Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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2309-825-109 Overview
2309-825-109-Biz 2300 QD Duo Siemens - Headset - Head-band - Office/Call center - Black - Binaural - 1.075 m is a professional-grade wired binaural headset designed specifically for use in high-performance office and call center environments. Featuring a comfortable headband form factor and dual earpieces, this headset delivers stereo audio output for clear conversations and superior noise isolation, making it ideal for Unified Communications (UC), call handling, and conferencing workflows where productivity and clarity are essential.
This model connects via Quick Disconnect (QD) interface for reliable plug-and-play connectivity with Siemens telephony systems and select compatible desk phones. The Biz 2300 QD Duo integrates a noise-canceling condenser microphone optimized for voice communications, supports a frequency response of 100 Hz – 10 kHz for wideband audio, and leverages digital signal processing (DSP) for acoustic protection and enhanced call clarity. Its robust build, lightweight design, and 1.075 m cable make it suited for day-long professional use in boardrooms and call center deployments requiring consistent, high-quality voice transmission.
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Explore more options from Audio Equipment or explore other Jabra products.
2309-825-109 Specifications
| Product Type | Headset |
| Audio Device Type | Headset |
| Microphone Type | Condenser |
| Speaker Type | N/A |
| Form Factor | Head-band |
| Use Case | Office / Call Center / Unified Communications |
| Channel Configuration | Stereo |
| Connectivity | Quick Disconnect (QD) |
| Input Types | N/A |
| Output Types | Quick Disconnect (QD) |
| Power Output (if Applicable) | N/A |
| Power Source | N/A |
| Frequency Response | 100 Hz – 10 kHz |
| Signal Processing | DSP / Acoustic Shock Protection / Noise Cancellation |
| Audio Codecs Supported | N/A |
| Mounting Option | N/A |
| Control Interface | Physical Buttons |
| Wireless Support | No |
| Product Name | 2309-825-109-Biz 2300 QD Duo Siemens - Headset - Head-band - Office/Call center - Black - Binaural - 1.075 m |
| Height | 7.2 |
| Width | 6.1 |
| Depth | 2.0 |
| Weight | 0.12 |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Audio Codecs Supported | N/A | N/A | N/A | N/A | N/A |
| Audio Device Type | Headset | Headset | Headset | Headset | Headset |
| Channel Configuration | Mono | Mono | Mono | Stereo | Mono |
| Connectivity | USB | USB-C | 3.5mm / Quick Disconnect (QD) | Quick Disconnect (QD) | USB-C |
| Control Interface | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons |
| Depth | 2.32 | 2.2 | 2.3 | 2.0 | 1.6 |
| Form Factor | Portable | Portable | Portable | Head-band | Headset |
| Frequency Response | 150 Hz – 7 kHz | 20 Hz – 20 kHz (Speaker), 100 Hz – 8 kHz (Microphone) | 80 Hz – 16 kHz | 100 Hz – 10 kHz | Speaker: 100 Hz – 10 kHz; Microphone: 150 Hz – 6.8 kHz |
| Height | 6.46 | 7.7 | 7.1 | 7.2 | 6.6 |
| Input Types | USB | USB-C | N/A | N/A | USB-C |
| Microphone Type | Condenser | MEMS | Condenser | Condenser | Condenser |
| Mounting Option | N/A | N/A | N/A | N/A | N/A |
| Output Types | USB / 3.5mm | USB-C | 3.5mm | Quick Disconnect (QD) | USB-C |
| Power Output (if applicable) | N/A | N/A | N/A | N/A | N/A |
| Power Source | USB-Powered | USB-Powered | N/A | N/A | USB-Powered |
| Product Name | Jabra Evolve 20 MS Mono | Jabra Evolve2 40 USB-C UC Mono | Jabra BIZ 2400 II Mono 3-1 NC WB Balance | 2309-825-109-Biz 2300 QD Duo Siemens - Headset - Head-band - Office/Call center - Black - Binaural - 1.075 m | Jabra BIZ 2300 Mono USB-C UC |
| Product Type | Audio Equipment | Audio Equipment | Audio Equipment | Headset | Audio Equipment |
| Signal Processing | DSP / AEC / Noise Suppression | DSP / AEC / Noise Suppression | DSP / Noise Suppression | DSP / Acoustic Shock Protection / Noise Cancellation | DSP / Noise Suppression |
| Speaker Type | N/A | Active | N/A | N/A | N/A |
| Use Case | Unified Communications / Conference Room / Meeting Spaces / Call Center | Unified Communications / Conference Room / Office / Remote Work | Unified Communications / Conference Room / Contact Center / Office | Office / Call Center / Unified Communications | Unified Communications |
| Weight | 0.22 | 0.42 | 0.13 | 0.12 | 0.115 |
| Width | 7.36 | 6.1 | 5.5 | 6.1 | 5.6 |
| Wireless Support | No | No | No | No | No |
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Questions & Answers
Q
What are the key features of the Biz 2300 QD Duo Siemens headset?
A
The Biz 2300 QD Duo Siemens headset offers binaural wearing, superior noise-canceling microphone, durable headband design, 1.075 m Kevlar-reinforced cable, and Quick-Disconnect (QD) compatibility with leading office phone systems.
Q
How does the noise-canceling microphone perform in a call-center environment?
A
The precision-tuned microphone filters out background noise and emphasizes the speaker’s voice, ensuring crystal-clear communication even in busy office or call-center settings.
Q
Which phone systems are compatible with the Biz 2300 QD Duo Siemens headset?
A
The Quick-Disconnect (QD) plug works seamlessly with major brands such as Avaya, Cisco, Siemens, Panasonic and other RJ-9 phone systems when paired with the appropriate adapter.
Q
Is the Biz 2300 QD Duo Siemens headset comfortable for all-day use?
A
Yes, the lightweight head-band design and soft leatherette ear cushions provide ergonomic comfort and balanced weight distribution for extended wear.
Q
What is the cable length of the Biz 2300 QD Duo Siemens headset?
A
The headset includes a 1.075 m Kevlar-reinforced cable plus a 1.5 m coiled cable (total extended length up to 2.575 m), offering ample freedom of movement.
Q
How durable is the Biz 2300 QD Duo Siemens headset?
A
Built with reinforced stress-points, a steel headband and Kevlar-strengthened cable, this headset is engineered for high-traffic office and call-center use.
Q
Can I replace the ear cushions and microphone foam on this headset?
A
Yes, both ear cushions and foam microphone covers are user-replaceable and available through authorized Siemens accessory channels.
Q
Does the Biz 2300 QD Duo Siemens offer mono and stereo wearing options?
A
This model is binaural only, providing stereo audio for enhanced clarity, noise isolation and professional call-center performance.
Q
How easy is it to disconnect the Biz 2300 QD Duo Siemens headset?
A
The Quick-Disconnect (QD) mechanism allows fast and secure plug-and-play removal from your phone base without shutting down your call.
Q
What warranty does the Biz 2300 QD Duo Siemens headset include?
A
This headset comes with a two-year manufacturer warranty covering defects in materials and workmanship under normal office use.
Q
How do I adjust the fit of the Biz 2300 QD Duo Siemens headset?
A
Simply slide the adjustable headband up or down to achieve a secure, comfortable fit that aligns the microphone boom at the corner of your mouth.
Q
What is the frequency response of the Biz 2300 QD Duo Siemens headset?
A
The headset delivers a wideband audio frequency range of 150 Hz to 6.8 kHz, ensuring clear, natural-sounding voice reproduction.
Q
Is the Biz 2300 QD Duo Siemens headset suitable for VoIP systems?
A
Yes, when used with a compatible QD-to-USB or QD-to-3.5 mm adapter, it performs reliably with VoIP softphones and unified communication platforms.
Q
How do I clean and maintain my Biz 2300 QD Duo Siemens headset?
A
Wipe ear cushions and headband regularly with a mild disinfectant wipe, avoid harsh chemicals, and replace worn foam covers to maintain hygiene and audio quality.
Q
What makes the Biz 2300 QD Duo Siemens headset ideal for call centers?
A
Its robust build, exceptional noise cancellation, ergonomic comfort and quick-disconnect feature deliver reliable, fatigue-free performance in high-volume call environments.
