Why Your Expensive Bluetooth Headset Sounds Terrible on Teams

Your Bluetooth headset sounds great for music but terrible on Teams because, when it connects through the laptop's built-in Bluetooth, opening the microphone switches it from the stereo music profile (A2DP) to the two-way hands-free profile (HFP), which drops audio to mono at lower quality. The usual fix is to plug in the USB dongle that came with the headset, pick the right device in Teams, and use LE Audio only where both the PC and headset support it.

Below: a quick diagnosis, the fixes in order, and headsets that ship with a USB adapter (Jabra Evolve2 65 MS, HP Poly Voyager 4320 MS, Yealink BH74 MS, Logitech Zone Wireless 2 ES), plus wired and DECT alternatives.

Quick diagnosis: symptom, cause, fix

Why does a Bluetooth headset sound worse on Teams calls?

Classic Bluetooth audio uses different profiles for different jobs. Logitech's support article explains it plainly: the Stereo (A2DP) profile gives high-quality, one-way audio for music and video but does not support the microphone, while the Hands-Free (HFP) profile enables two-way communication and, to do that, reduces audio to mono, so quality is lower than Stereo. The Bluetooth SIG defines HFP for phones working with a hands-free device "such as a headset": it is built for calls, not hi-fi.

So the moment Teams opens the microphone, you hear the call through the narrower hands-free path. Nothing is broken; the headset does what the profile asks.

Fix 1: Plug in the USB dongle that came in the box

Business Bluetooth headsets usually ship with a small USB adapter, and it is not an optional extra. Microsoft's Teams device documentation says "most Bluetooth headsets and speakerphones that are certified for Microsoft Teams are designed to be used with a USB dongle", adds that native Bluetooth performance "is impacted by the Bluetooth radio on the host PC", and advises keeping the dongle in high-density radio environments. A busy open-plan floor is exactly that.

The dongle pairs the headset with a radio the manufacturer chose, not whatever chip is in the laptop. Jabra describes its Link 380 as plug-and-play with "no need to install separate software drivers", rates it at up to 30 m, and warns that without an adapter a connection "might get patchy over a relatively short distance". Plug the dongle into the laptop or a front dock port rather than a crowded hub (see our docking station checklist), and match USB-A or USB-C to your port, since not every USB-C port behaves the same.

Fix 2: Select the right device in Teams

Even with the right hardware, Teams can be pointed at the wrong device. Microsoft's steps: Settings and more > Settings > Devices, choose your headset under Speaker and Microphone, then Make a test call. The pre-join screen's Audio settings offers the same choice.

With a dongle, pick its entry for both. Teams' noise suppression also offers Voice isolation, which suppresses other voices near you in shared spaces.

Fix 3: Clean up the Windows side

On Windows 10, two entries for one headset are normal: Logitech advises using the Hands-Free device for both output and microphone on calls, never Stereo. On Windows 11 you should see one device; if you see two, update drivers through Windows Update and the PC maker's app, remove the headset under Settings > Bluetooth & devices, and pair it again.

If music stays poor after a call, an app still holds the microphone: check Settings > Privacy & security > Microphone. Microsoft also notes Teams button controls don't work while third-party conferencing apps are running.

Fix 4: Does LE Audio solve it?

Possibly, on newer hardware. The Bluetooth SIG says LE Audio's LC3 codec "will provide improvements in audio quality over the SBC codec included with Classic Audio", and Microsoft says LE Audio "improves battery life, voice call quality, and device flexibility". The catch: both the PC and headset must support it, on Windows 11 version 22H2 or newer with LE Audio capable drivers. To check, go to Settings > Bluetooth & devices > Devices and look for Use LE Audio when available; if the toggle is missing, your PC does not support it yet. For most fleets today, the dongle is the dependable fix.

What to buy if the fix is hardware

If your headset never had a dongle, buy a business headset with a matched USB adapter. Microsoft tests certified headsets for plug-and-play use, call control and "wide-band audio with no echo, distortion, or excessive glitches", so choose the Teams (MS) version if you run Teams. Prices are as listed on 23 Oct 2026; all were in stock.

• Jabra Evolve2 65 MS Stereo Wireless Bluetooth Headset (USB-A), S$330.00. Ships with the Jabra Link 380a MS adapter; Teams certified per the listing. Our Evolve2 65 vs Evolve2 75 comparison covers the step up.
• HP Poly Voyager 4320 MS Stereo Wireless Bluetooth Headset (USB-A), S$218.85, with the Poly BT700 USB-A adapter; Teams certified build.
• Yealink BH74 MS Dual Wireless Bluetooth Headset, S$186.30, with the Yealink BT51C USB-C/A adapter; Teams certified. See the Yealink BH70, BH71, BH74 and BH78 comparison for the rest of the range.
• Logitech Zone Wireless 2 ES MS with Dongle, S$168.00, with a USB-C receiver and USB-A adapter. Logitech also sells a native Bluetooth Zone Wireless 2 ES at S$150.00 that is certified for Teams over native Bluetooth; for crowded offices we would pay the difference for the receiver.

Or skip Bluetooth. A wired USB headset such as the Yealink UH42 Mono Teams (S$45.00) has no pairing or profile switching; our Yealink wired USB headset guide compares the range. For people who walk the floor, a DECT headset such as the Yealink WH64 Mono Teams (S$237.60) uses its own base station, plus Bluetooth for a mobile; DECT vs Bluetooth headsets for the office explains when DECT is the better choice. Browse the Teams certified headsets collection or read Best Office Headsets for Business in Singapore.

Lost the dongle?

Replacement adapters must match the headset family and the MS or UC variant (Jabra makes separate Link 380 versions for each). Standalone adapters are not listed on our store at the moment, so email us the headset model and we will check. Kitting out the rest of the desk? Our list of office gadgets that look useless until you try them includes a headset charging stand that keeps wireless headsets topped up.

Buying Teams headsets in Singapore

SourceIT supplies Jabra, HP Poly, Yealink and Logitech with local warranty; confirm the term for your SKU when requesting a quote. For a rollout, tell us the laptops and docks in use and whether staff need Teams or UC variants. Use Request for Quotation on the product page, call (65) 6978 3502, email Sales@sourceit.com.sg, or see volume discounts and special pricing and our contact page. SourceIT is GeBIZ and Vendors@Gov registered for government buyers.

Frequently asked questions

Why does my Bluetooth headset sound bad only when I use the microphone? Over classic Bluetooth, using the microphone moves the headset from the Stereo (A2DP) profile, which has no microphone, to the Hands-Free (HFP) profile, which carries two-way audio in mono at lower quality.

Does the USB dongle improve Teams call quality? It usually gives a more stable link than the laptop's built-in Bluetooth. Microsoft says most Teams-certified Bluetooth headsets are designed to be used with a USB dongle and that native Bluetooth performance depends on the PC's radio.

Which device should I select in Teams? In Teams Settings > Devices, choose the headset or its dongle for both Speaker and Microphone, then use Make a test call. On Windows 10, pick the Hands-Free entry rather than Stereo when there is no dongle.

Will LE Audio fix Bluetooth call quality on Windows? It can help, but both the PC and headset must support it, the PC needs Windows 11 version 22H2 or newer and LE Audio capable drivers. Look for "Use LE Audio when available" under Settings > Bluetooth & devices > Devices.

Is a wired USB headset better for Teams? It avoids profile switching, pairing and charging, so it suits desk-bound staff. Wireless users may prefer a dongle-based Bluetooth or DECT headset.

What does Teams certification mean for a headset? Microsoft tests certified peripherals for plug-and-play use, call control such as answer, mute and volume, and wide-band audio without echo or distortion; Teams versions also add a dedicated Teams button.