HP Poly Mission 425 Classic Stereo Wired Headset USB-C & USB-A

Every productive workday begins with a headset that simply works - reliably, comfortably, and clearly. The HP Poly Mission 425 Classic is exactly that. A no-nonsense, professionally engineered USB stereo headset built for call-intensive environments, back-to-back meetings, and the long demanding days that modern work demands.

At the heart of the Mission 425 is AI Noise Reduction - a technology that actively detects and filters ambient sounds in real time, so only your voice comes through during calls. No manual muting every time a door slams or a colleague speaks nearby. No apologising for background noise. Just clear, focused conversations from first word to last.

Super wideband audio captures a broader frequency range than standard headsets, reproducing voice detail and tone more naturally - making calls feel closer to in-person speech. Pair that with 32mm speaker drivers that deliver richer audio and sharper clarity, and you have a headset that makes voices easier to recognise and dramatically reduces listening fatigue during long sessions.

HP Poly SoundGuard Digital runs continuously in the background, protecting your hearing by controlling sudden audio spikes and managing daily noise exposure levels - keeping every listening session safe without ever distorting speech quality. This is not a basic limiter. It is a multi-layer acoustic protection system that monitors both instantaneous and cumulative noise exposure throughout your working day.

Connect via the USB-C cable with the included USB-A adapter, plug in, and you are ready to go. Manage your device and personalise settings through the HP Poly Studio App, or let your IT team deploy and configure thousands of units remotely through HP Poly Lens Admin Cloud. The Mission 425 is built for individuals and enterprise fleets alike.

Made with at least 30% post-consumer recycled plastic and arriving in paper-based packaging, it is also a headset your procurement team can stand behind - certified to TCO 10 standards and built with measurable environmental responsibility.

Dependable clarity. Lasting comfort. Professional performance, every call.

KEY FEATURES

AI Noise Reduction - Automatic Background FilteringThe Mission 425 is equipped with AI Noise Reduction that continuously detects and eliminates ambient sounds from your environment - so only your voice is transmitted during calls. Background noise from open offices, home environments, coffee shops, and busy workspaces is filtered out automatically, without you needing to manually mute. Your voice stays clear and professional regardless of what is happening around you.

Super Wideband Audio - Natural-Sounding CallsSuper wideband audio captures a significantly broader frequency range than standard narrowband or wideband headsets, reproducing voice detail and tone with greater fidelity. Calls feel more like face-to-face conversations, nuance and intonation come through clearly, and extended call sessions become far less fatiguing when voices sound natural rather than compressed.

32mm Speaker Drivers - Richer, Clearer AudioLarge 32mm drivers deliver richer, more detailed audio compared to the smaller drivers found in budget headsets. Voices are easier to distinguish and understand, which reduces cognitive load during long meetings. The improved clarity also means you spend less effort straining to hear and more energy on the conversation itself.

SoundGuard Digital - Multi-Layer Hearing ProtectionHP Poly SoundGuard Digital is a comprehensive acoustic protection system that operates on multiple levels simultaneously. It limits sudden loud audio spikes to below 102 dB SPL using G616 anti-startle protection - compliant with the ACIF G616 international standard. It applies an Advanced Audio Limiter to prevent sounds from exceeding safe thresholds. And it monitors and controls your Average Daily Noise Exposure to ensure it does not exceed 80 dBA or 85 dBA time-weighted average across your working day. SoundGuard protection against acoustic shock limits all sounds to below 118 dBA by default, active at all times without any configuration required. Your hearing is protected throughout every call and every listening session, without any impact on audio quality.

285-Degree Rotating Boom Microphone - Wear It Your WayThe boom microphone rotates a full 285 degrees, allowing you to position it on either the left or right side of your face for a personalised, comfortable fit. A quick upward movement of the boom arm automatically mutes the microphone - providing instant, intuitive silence when you need it without reaching for a button.

Intuitive Inline Controls - Full Call Management at Your FingertipsThe inline controller on the cable puts all essential call functions within easy reach. Mute and unmute your microphone, adjust volume up or down, answer, ignore, or end calls, and access Microsoft Teams directly - all without touching your computer. A dedicated Microsoft Teams button illuminates with the Teams icon when you are on a Teams call, providing clear visual status at a glance. Tone alerts confirm volume maximum, volume minimum, mute on, and mute off so you always know your current status.

Microsoft Teams Certified - and Works with Zoom, Google Meet & MoreThe Mission 425 Classic is certified for Microsoft Teams, ensuring optimal integration with Teams calling, notifications, and controls. The dedicated Teams button on the inline controller provides one-touch access to the Teams interface. The headset also works seamlessly with Zoom, Google Meet, Cisco Webex, and all major UC platforms straight out of the box.

Plug & Play USB-C with USB-A Adapter IncludedThe Mission 425 connects via USB-C with a tethered USB-C to USB-A adapter included in the box, giving you flexibility to connect to virtually any laptop, desktop, or workstation regardless of available ports. No drivers to install, no software required to get started - simply plug in and begin your call.

HP Poly Studio App - Personalise Your ExperienceThe HP Poly Studio App allows individual users to customise their audio settings, adjust call preferences, manage device configurations, and update firmware - all from a simple, intuitive interface on their computer. Access to SoundGuard Digital's full feature set requires the Studio App.

HP Poly Lens Admin Cloud - Enterprise-Scale ManagementFor IT administrators, HP Poly Lens Admin Cloud provides centralised, remote management of thousands of headset endpoints from a single platform. Deploy, configure, monitor, and update the entire fleet without visiting individual workstations. Ideal for organisations equipping large teams across multiple locations.

Lightweight at 126g - Designed for All-Day WearAt just 126 grams, the Mission 425 Classic is light enough to wear through the longest working days without discomfort. The adjustable headband ensures a stable, personalised fit, and the soft foam ear cushions provide comfortable contact throughout extended sessions. The stereo design also supports a monoaural wearing style - one ear cup folded back - for users who prefer to keep one ear open to their environment.

Replaceable Ear Cushions - Extend Your InvestmentThe foam ear cushions on the Mission 425 Classic are replaceable, allowing you to refresh the headset as cushions wear over time rather than replacing the entire unit. This reduces total cost of ownership and extends the useful life of the product.

Compatible with Windows, macOS, Chrome OS and MobileThe Mission 425 works across Windows 11, macOS, Chrome OS, Android, and iOS - covering virtually every device and operating system in modern professional environments. Whether your team uses Windows laptops, MacBooks, Chromebooks, or switches between devices, the Mission 425 adapts seamlessly.

TCO 10 Certified and Sustainably BuiltThe HP Poly Mission 425 Classic is TCO 10 certified - meeting rigorous, independently verified environmental and social responsibility standards. It is manufactured using at least 30% post-consumer recycled plastic and arrives in paper-based sustainable packaging. For organisations with green procurement mandates, ESG reporting requirements, or corporate sustainability commitments, the Mission 425 is a verifiable, responsible choice.

2-Year Poly Standard WarrantyBacked by the Poly standard two-year limited warranty for confidence on individual purchases and enterprise deployments alike.

WHO IS THIS FOR?

• Call centre and contact centre agents who need reliable, consistent audio quality through long shifts in demanding environments
• Office professionals attending frequent video calls and meetings who need a dependable, no-setup headset
• Hybrid workers who move between home and office and need a versatile wired headset that works everywhere
• IT managers and procurement teams deploying headsets at scale who need remote management capability and enterprise certification
• Microsoft Teams users who want a dedicated Teams-certified headset with one-touch Teams access
• Organisations with sustainability requirements that need TCO-certified, recycled-material products for responsible procurement
• Budget-conscious buyers who need professional-grade HP Poly audio quality at an accessible price point

TECHNICAL SPECIFICATIONS

• Brand: HP Poly
• Model: Mission 425 Classic Stereo
• SKU: C01B3A6
• Type: Wired over-the-head stereo headset
• Colour: Black
• Weight: 126g
• Dimensions: 170 x 180 x 40 mm (W x D x H)
• Connection: USB-C (tethered USB-C to USB-A adapter included)
• Cable Length: 2 metres
• Speaker Size: 32mm
• Speaker Type: Stereo (also supports monoaural wearing style)
• Speaker Frequency Response: 20 Hz to 20 kHz (multimedia mode)
• Speaker Sensitivity: 116 dB
• Microphone: Single AI noise-cancelling boom microphone
• Microphone Sensitivity: -35 3 dB
• Microphone Frequency Response: 50 Hz to 16 kHz
• Signal-to-Noise Ratio: Greater than 55 dB
• Boom Mic Length: 130mm
• Boom Mic Rotation: 285 degrees - wearable on left or right side; raise to mute
• Ear Cushions: Foam (Classic version); replaceable
• Headband: Adjustable
• Inline Controls: Mute/unmute; Volume +/-; Microsoft Teams button; Call answer, ignore, end
• Tone Alerts: Volume maximum; Volume minimum; Mute on; Mute off; Muted
• Acoustic Protection: SoundGuard Digital (G616 anti-startle, Advanced Audio Limiter, Average Daily Noise Exposure management)
• User App: HP Poly Studio App (device personalisation, settings, firmware updates)
• IT Management: HP Poly Lens Admin Cloud (remote fleet deployment and management)
• Certifications: Microsoft Teams certified; TCO 10 certified
• Platform Compatibility: Microsoft Teams, Zoom, Google Meet, Cisco Webex, major UC platforms
• Operating System Compatibility: Windows 11, macOS, Chrome OS, Android, iOS
• Sustainability: At least 30% post-consumer recycled plastic; paper-based packaging
• Warranty: Poly standard two-year limited warranty

IN THE BOX

• HP Poly Mission 425 Classic stereo headset
• USB-C to USB-A tethered adapter
• Quick start guide
• Warranty card
• Product notice

FREQUENTLY ASKED QUESTIONS

Q: What does AI Noise Reduction actually do on the Mission 425?

A: AI Noise Reduction is an active microphone processing technology that continuously analyses the audio signal captured by the boom microphone, identifies non-speech sounds in your environment, and filters them out in real time before your voice is transmitted on a call. Background conversations, keyboard sounds, air conditioning, traffic, and other ambient noise common in office and home environments are detected and removed automatically. You do not need to manually mute to suppress background noise between your sentences - the system handles it continuously throughout the call. The result is a consistently clean voice signal that sounds professional regardless of your surroundings.

Q: What is SoundGuard Digital and how does it protect my hearing?

A: SoundGuard Digital is HP Poly's multi-layer acoustic protection system. It operates on three levels simultaneously. First, G616 anti-startle protection limits sudden audio spikes - such as unexpected loud sounds or feedback - to below 102 dB SPL, compliant with the international ACIF G616 standard. Second, an Advanced Audio Limiter provides an additional layer of protection against sounds exceeding safe thresholds. Third, Average Daily Noise Exposure management monitors your cumulative sound exposure throughout the working day and controls output levels to ensure they do not exceed 80 dBA or 85 dBA time-weighted average. Additionally, basic acoustic shock protection is always active by default, limiting all sounds to below 118 dBA without any configuration required. To access the full SoundGuard Digital feature set, the HP Poly Studio App is required.

Q: What is super wideband audio and why does it matter?

A: Standard telephone calls and many basic headsets use narrowband audio, which captures a limited frequency range that results in voices sounding thin, slightly artificial, or difficult to distinguish clearly over extended periods. Wideband audio captures more of the voice spectrum. Super wideband audio captures an even broader range - from 50 Hz to 16 kHz on the Mission 425 microphone and 20 Hz to 20 kHz in multimedia mode - reproducing voice detail, tone, and nuance much more naturally. The practical effect is that calls feel more like face-to-face conversations. Voices are easier to recognise and understand, and listening fatigue during long call sessions is significantly reduced.

Q: Does the boom arm automatically mute when raised?

A: Yes. Lifting the boom arm upward activates an automatic mute function - the microphone is muted as soon as you raise the boom away from your face. This provides an intuitive, instant way to mute during a call without pressing any button. When you lower the boom arm back into position, the microphone unmutes automatically. Tone alerts confirm mute on and mute off so you always know your status.

Q: Can I wear the headset with only one ear cup in use?

A: Yes. The Mission 425 supports both a full stereo wearing style and a monoaural wearing style. In monoaural mode, one ear cup is folded back against the headband so only the other ear receives audio. This is useful in environments where situational awareness matters - such as open offices where colleagues may approach - or for users who simply prefer to keep one ear open to their surroundings.

Q: Is the Mission 425 Classic certified for Microsoft Teams?

A: Yes. The Mission 425 Classic is certified for Microsoft Teams. A dedicated Microsoft Teams button on the inline controller provides one-touch access to Teams functionality, and the Teams icon illuminates on the controller when you are on a Teams call. Certification means the headset has been tested and validated by Microsoft to ensure optimal performance, button integration, and call quality within the Teams environment.

Q: What is the difference between the Mission 425 Classic and the Mission 425 standard version?

A: The primary difference is the ear cushion material. The Mission 425 Classic uses foam ear cushions, which are lighter and allow for better air circulation, making them well-suited to all-day wear in warmer environments or for users who find leatherette cushions less breathable. The standard Mission 425 uses leatherette ear cushions, which provide a softer feel against the skin and a slightly better passive seal. Both versions share the same audio technology, AI Noise Reduction, SoundGuard Digital, inline controls, connectivity, and certifications. The Classic version at 126 grams is also slightly lighter than the leatherette version.

Q: Does the Mission 425 require any software or drivers?

A: No software or drivers are required to use the Mission 425 for calls and meetings. It operates as a plug-and-play USB audio device on Windows 11, macOS, Chrome OS, Android, and iOS. The HP Poly Studio App is optional and used for personalising audio settings, adjusting preferences, and accessing the full SoundGuard Digital feature set. IT teams can optionally use HP Poly Lens Admin Cloud for fleet management, but this is not required for standard operation.

Q: What does HP Poly Lens Admin Cloud do?

A: HP Poly Lens Admin Cloud is an enterprise device management platform that allows IT administrators to remotely deploy, configure, monitor, and update thousands of HP Poly headset endpoints from a single web-based interface. This eliminates the need to physically visit individual workstations to set up, update, or troubleshoot headsets. For large organisations equipping hundreds or thousands of employees, Lens Admin Cloud dramatically reduces deployment time and ongoing IT overhead. Individual users are not required to use Lens - it is an IT administration tool.

Q: Is the headset compatible with Mac and Chromebook?

A: Yes. The Mission 425 is fully compatible with macOS and Chrome OS in addition to Windows 11. It also works with Android and iOS mobile devices. Across all these platforms, the headset operates as a standard plug-and-play USB audio device - no platform-specific drivers or additional software are needed.

Q: Are the ear cushions replaceable?

A: Yes. The foam ear cushions on the Mission 425 Classic are replaceable, available as accessories separately. This allows you to refresh a well-used headset rather than replacing the entire unit, reducing total cost of ownership and extending the useful life of your investment.

Q: How does the Mission 425 meet sustainability standards?

A: The HP Poly Mission 425 Classic is certified to TCO 10 - the most current generation of the internationally recognised TCO sustainability standard for IT products. It is manufactured using at least 30% post-consumer recycled plastic, measured as a percentage of total plastic content. It arrives in paper-based packaging rather than petroleum-based plastic packaging. TCO 10 certification covers environmental impact criteria, restricted hazardous substances, social responsibility in the supply chain, and product safety - all independently verified by a third party, not self-declared. For organisations with green procurement policies, ESG reporting requirements, or corporate sustainability commitments, these credentials are meaningful and auditable.

Q: What warranty does the HP Poly Mission 425 Classic come with?

A: The HP Poly Mission 425 Classic is covered by the Poly standard two-year limited warranty from the date of purchase. This covers manufacturing defects and hardware faults under normal use conditions.

Q: Can this headset be used in a call centre environment?

A: Yes, the Mission 425 is specifically designed with call-intensive environments in mind. The AI Noise Reduction microphone performs consistently in high-density, noisy workspaces. SoundGuard Digital hearing protection is essential for agents spending many hours daily on calls. The lightweight 126g design and foam ear cushions on the Classic version support all-day wearing comfort across long shifts. IT teams can manage and update entire contact centre headset fleets remotely via HP Poly Lens Admin Cloud. And the 2-year warranty provides reliability confidence for large deployments.

Q: How does the Mission 425 compare to the Poly Mission 625?

A: The Mission 425 and Mission 625 are both stereo USB headsets in the HP Poly Mission series, with the 625 positioned as the more advanced model. The Mission 625 features a higher-specification microphone system and additional premium comfort features including memory foam ear cushions and an adjustable padded headband pad. The Mission 425 Classic is the value-optimised option - delivering the same core technologies including AI Noise Reduction, super wideband audio, SoundGuard Digital, and Teams certification, at a more accessible price point for organisations prioritising value without compromising professional performance.

WHY CHOOSE HP POLY?

HP Poly represents the combined expertise of Plantronics and Polycom - two of the most respected names in professional audio and unified communications - unified under the HP brand. The result is a portfolio of headsets, speakerphones, and video conferencing solutions that are trusted by enterprise organisations worldwide, including some of the world's largest contact centres, government agencies, and global corporations.

Every HP Poly product is designed with the demands of professional communication at its core - not adapted from consumer audio. The Mission 425 inherits this engineering heritage at an accessible price point, bringing Poly's professional audio quality, acoustic protection technology, and enterprise management capability to teams of every size.

When you choose HP Poly, you choose a brand with decades of professional audio experience, enterprise-grade certifications, and a genuine commitment to the audio quality that makes work communication more effective.

THE BOTTOM LINE

The HP Poly Mission 425 Classic delivers everything a modern professional needs from a wired USB headset - clear, natural audio with AI background filtering, continuous hearing protection, Microsoft Teams certification, and effortless plug-and-play connectivity - in a lightweight, comfortable design built for the demands of the full working day.

For South African businesses equipping teams in offices, contact centres, or hybrid environments, the Mission 425 Classic offers HP Poly's trusted professional audio quality at a price point that makes fleet deployment genuinely practical.

Clear calls. Protected hearing. All-day comfort. Ready the moment you plug it in.