• EPOS ADAPT 661 Headset
  • EPOS ADAPT 661 Headset Front/500
  • EPOS ADAPT 661 Headset Left/500
  • EPOS ADAPT 661 Headset Right/500
  • EPOS ADAPT 661 Headset Rear/500
  • EPOS ADAPT 661 Headset Alternate-Image1/500
  • EPOS ADAPT 661 Headset
  • EPOS ADAPT 661 Headset Front/500
  • EPOS ADAPT 661 Headset Left/500
  • EPOS ADAPT 661 Headset Right/500
  • EPOS ADAPT 661 Headset Rear/500
  • EPOS ADAPT 661 Headset Alternate-Image1/500

Shipping Information

The shipping process is fully robotic and orders are normally pulled and shipped quickly in 7 different warehouses across the US and then dropped in sealed USPS, UPS and FedEx containers for pick-up on the next business day. High volume or backordered items may have additional shipping delays. Once pulled, orders cannot be stopped, however you can return orders for refund unopened if you have changed your mind. Tracking normally is sent / updated within 48 hours of pick-up. Delivery is normally 3-10 business days after leaving the warehouse, however carrier delays may occur. Shipping may take longer in rural areas, due to carrier delay, weather or acts of God. Weekends and Holidays do not count as business days and have no pickup, movement or delivery.

Covid 19 Update — We have seen slowdowns and backlogs in package pickup, sorting, scanning and delivery by UPS, Fedex and USPS caused by worker shortages and facilities disruption due to the Covid 19 Pandemic. Some UPS and USPS hubs are no longer scanning all packages, as a result some tracking will show nothing until delivery.

EPOS ADAPT 661 Headset

MSRP: $485.00
Sale: $391.26
Your Savings: $93.74


In Stock

UPC: 840064408066

  • Stereo
  • USB Type C, Sub-mini phone (2.5mm), Mini-phone (3.5mm)
  • Wired/Wireless
  • Bluetooth
  • 82 ft
  • 490 Ohm
  • 17 Hz
  • 23 kHz
  • Over-the-ear
  • Binaural
  • Ear-cup
  • MEMS Technology, Noise Cancelling Microphone
  • Noise Canceling

* ground shipping normally takes 3-10 business days, depending on destination

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Maximize focus and productivity anywhere with a headset powered by EPOS AI™ for personal audio with superb call clarity, stereo sound and adaptive ANC. Enjoy a unique UC optimized solution with machine learning enhanced microphone performance. Adaptive ANC helps you regain concentration by monitoring your working environment and adjusts noise reduction accordingly, even reducing wind noise when outdoors so you can work efficiently whatever your situation. Get straight into collaborative work via a dedicated button that launches Microsoft Teams on your PC via the USB-C dongle included. Stay organized with Alexa voice assistant and connect simultaneously to mobile and PC. Whether revitalizing your open office, working on-the-go, or enjoying a relaxed commute, ADAPT 600 boosts efficiency and improves wellbeing for today's mobile workforce.

We are rebranding from EPOS | SENNHEISER to EPOS branding on our products. During the transition period the same product may exist in both versions.

Tech Specs

Manufacturer EPOS
Manufacturer Part Number 1001004
Manufacturer Website Address http://www.eposaudio.com
Brand Name EPOS
Product Line ADAPT
Product Series 600
Product Model 661
Product Name ADAPT 661 Headset
Product Type Headset
Technical Information:
Connectivity TechnologyWired/Wireless
Wireless TechnologyBluetooth
Wireless Operating Distance82 ft
Bluetooth StandardBluetooth 5.0
Sound ModeStereo
Impedance490 Ohm
Minimum Frequency Response17 Hz
Maximum Frequency Response23 kHz
Microsoft Teams Button
Rotating Ear Cup
apt-X Technology
Voice Assistant
Active Noise Canceling
Unified Communication
Rechargeable Battery
Noise Reduction
Advanced Audio Coding (AAC)
Sub Band Coding (SBC)
Quad Microphone
Noise Attenuation
Touch Control
Voice Prompt
Detachable Cable
Beamforming Microphone
Noise CancelingYes
Sound Pressure Level118 dB
Earpiece DesignOver-the-ear
Earpiece TypeBinaural
Microphone TechnologyMEMS Technology
Noise Cancelling
Integrated MicrophoneYes
Detachable MicrophoneNo
Host InterfaceUSB Type C
Sub-mini phone (2.5mm)
Mini-phone (3.5mm)
Physical Characteristics:
Form FactorEar-cup
Weight (Approximate)8.01 oz
Package Contents
  • ADAPT 661 Headset
  • BTD 800 USB-C Dongle
  • USB-C Cable with Micro-USB Connector
  • Audio Cable (2.5 mm and 3.5 mm Jack Plugs)
  • Carry Case
  • Safety Guide
  • Compliance Sheet
  • Mobile
  • Softphone
  • PC
  • Mac
Limited Warranty2 Year


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