1. Produkt Overview
The EPOS Adapt 661 is a premium Bluetooth headset designed for maximizing focus and productivity in various environments. It features adaptive Active Noise Cancellation (ANC), superb call clarity powered by EPOS AI™, and stereo sound. The headset is optimized for Unified Communications (UC) and certified for Microsoft Teams, ensuring seamless integration with professional communication platforms. It includes a BTD 800 USB-C dongle for PC connectivity.

Ofbylding: Front view of the EPOS Adapt 661 Headset, showcasing its sleek black design and over-ear cups.
2. Package Ynhâld
Kontrolearje oft alle items yn it pakket oanwêzich binne:
- EPOS Adapt 661 Headset
- BTD 800 USB-C Dongle
- USB-oplaadkabel
- Audio Cable (3.5 mm jack)
- Draachkoffer
- Safety Guide
- Compliance Sheet

Image: Contents of the EPOS Adapt 661 package, including the headset, USB-C dongle, USB cable, carry case, safety guide, and compliance sheet.
3. Opsette
3.1. It opladen fan de Headset
- Connect the supplied USB charging cable to the USB-C port on the headset.
- Ferbine it oare ein fan 'e USB-kabel mei in oandreaune USB-poarte (bygelyks, kompjûter, muorreadapter).
- De LED-yndikator op 'e headset sil de oplaadstatus oanjaan. In folsleine lading duorret sawat 3 oeren.
3.2. Oan- / útskeakelje
- To power on: Press and hold the Power button until the LED illuminates.
- To power off: Press and hold the Power button until the LED turns off.
3.3. Ferbine mei apparaten
3.3.1. Bluetooth Pairing (Mobile Device)
- Soargje derfoar dat de headset ynskeakele is.
- Activate Bluetooth pairing mode on the headset (refer to the specific button combination in the safety guide, typically holding the Bluetooth button). The LED will flash blue/red.
- On your mobile device, go to Bluetooth settings and select "EPOS Adapt 661" from the list of available devices.
- Once connected, the LED will turn solid blue.
3.3.2. Connecting to PC (BTD 800 USB-C Dongle)
- Plug the BTD 800 USB-C dongle into an available USB-C port on your PC.
- The dongle will automatically pair with the headset. The LED on the dongle will turn solid blue when connected.
- Ensure the EPOS Adapt 661 is selected as the audio input and output device in your PC's sound settings.
- For Microsoft Teams certification features, ensure Microsoft Teams is running on your PC.
4. Bedriuwsinstruksjes
4.1. Basiskontrôles
- Volume kontrôle: Use the touch panel on the right earcup (swipe up/down) or physical buttons (if present) to adjust volume.
- Spylje / Pauze: Tap the center of the right earcup.
- Track Skip: Swipe forward/backward on the right earcup.
- Opropbehear:
- Answer/End Call: Tap the center of the right earcup.
- Reject Call: Press and hold the center of the right earcup.
- Voice Assistant: Press the dedicated voice assistant button (if present) or tap and hold the center of the right earcup to activate your device's voice assistant (e.g., Alexa, Siri, Google Assistant).
4.2. Aktive lûdsûnderdrukking (ANC)
The Adapt 661 features adaptive ANC, which automatically adjusts noise reduction based on your environment. You can typically toggle ANC on/off or adjust its intensity using a dedicated button on the headset or through the EPOS Connect app.
4.3. TalkThrough Function
The TalkThrough feature allows you to hear your surroundings without removing the headset. Activate this function via a dedicated button or the EPOS Connect app to temporarily reduce audio volume and amplify ambient sounds.
4.4. Microsoft Teams-yntegraasje
When connected to a PC via the BTD 800 USB-C dongle, the headset offers seamless Microsoft Teams integration. A dedicated button on the headset can launch Microsoft Teams on your PC, answer/end Teams calls, and mute/unmute the microphone within Teams.
5. Wichtige funksjes útlein

Image: EPOS Adapt 661 Headset highlighting key features such as superb call clarity, adaptive ANC, and superior sound.
- EPOS AI™ Powered Call Clarity: Machine learning algorithms optimize voice pickup from three advanced microphones, ensuring a natural listening experience for your callers.
- Adaptive Active Noise Cancellation (ANC): A 4-microphone system continuously monitors your environment, adjusting noise reduction for optimal focus indoors and minimizing wind noise outdoors.
- Superior Stereo Sound: Enjoy high-quality audio for both communication and music, enhanced by a personalized audio profile to aid concentration.
- UC Certified Solution: Certified for Microsoft Teams and optimized for various Unified Communications platforms, guaranteeing clear and reliable calls.
- Meardere-puntsferbining: Connect simultaneously to two Bluetooth devices (e.g., mobile phone and PC via dongle), allowing seamless switching between audio sources.
- Alexa-yntegraasje: Built-in Alexa voice assistant for hands-free control and organization.

Image: The EPOS Adapt 661 Headset with "Optimized for UC" text, displaying logos for Microsoft Teams, Webex, Avaya, and Alcatel-Lucent Enterprise, indicating broad compatibility.
6. Underhâld
- Reiniging: Brûk in sêfte, droege doek om de headset skjin te meitsjen. Brûk gjin floeibere reinigingsmiddelen of oplosmiddels.
- Opslach: When not in use, store the headset in its provided carry case to protect it from dust and damage.
- Batterij soarch: To prolong battery life, avoid fully discharging the battery frequently. Charge the headset regularly.
- Temperatuer: Avoid exposing the headset to extreme temperatures (below -4°F / -20°C or above 140°F / 60°C).
7. Probleemoplossing
7.1. Gjin lûd of minne audiokwaliteit
- Kontrolearje folume: Ensure the headset volume and device volume are turned up.
- Meitsje: Disconnect and re-pair the headset with your device.
- Apparaat seleksje: On your PC, ensure "EPOS Adapt 661" is selected as the default playback and recording device.
- Batterij opladen: A low battery can affect performance. Ensure the headset is charged.
7.2. Headset Not Connecting
- Power On: Ensure the headset is powered on and in pairing mode (if applicable).
- Bluetooth oan: Kontrolearje oft Bluetooth ynskeakele is op jo apparaat.
- Ôfstân: Ensure the headset is within the Bluetooth range (up to 82 feet / 25 meters line of sight).
- Ynterferinsje: Ferpleats fuort fan oare draadloze apparaten dy't ynterferinsje kinne feroarsaakje.
- Dongle ferbining: If using the BTD 800 dongle, ensure it is securely plugged into the PC.
7.3. Active Noise Cancellation (ANC) Not Effective
- Proper Fit: Ensure the earcups form a good seal around your ears. Adjust the headband for a snug fit.
- ANC op: Verify that ANC is activated.
- Miljeu: Adaptive ANC adjusts to different noise types; some irregular or sudden noises may not be fully cancelled.
8. Technyske spesifikaasjes
| Model Namme | AANPASJE 661 |
| Artikel Number | 1001004 |
| Wearing Style | Headband, Over-Ear |
| Kleur | Swart |
| Konnektivität | Bluetooth 5.0, Wired (3.5 mm Jack, USB-C) |
| Triedleaze berik | Oant 82 foet (25 meter) sichtline |
| Aktive Noise Cancellation | Adaptive ANC |
| Mikrofoan | EPOS AI™ optimized voice pickup |
| Oplaadtiid | Ca. 3 oeren |
| Standby tiid | Oant 360 oeren |
| Operating Temperatuer | 0°C - 40°C (32°F - 104°F) |
| Storage Temperatuer | -4°F - 140°F (-20°C - 60°C) |
| Headset Gewicht | 8 ounces (227 gram) |
| Ofmjittings (produkt) | 8.2 x 7.4 x 2.6 inch (20.8 x 18.8 x 6.6 sm) |
| Certifications | Microsoft Teams, aptX, Made for iPhone (MFI) |
| Special Features | ActiveGard, WindSafe, TalkThrough, Room Experience, SpeakFocus, Mobile App Support, Advanced Own-Voice, Multimedia & Music Listening, Touch Control, Voice Prompts |
9. Garânsje en stipe
The EPOS Adapt 661 Headset is covered by a manufacturer's warranty. For detailed warranty information, please refer to the compliance sheet included in your package or visit the official EPOS website. For technical support, troubleshooting assistance beyond this manual, or to inquire about replacement parts, please contact EPOS customer service through their official support channels.
Online boarnen:
- Official EPOS Website: www.kinnweb.com
- Produktstipeside: (Sjoch nei offisjele website for specific product support page)





