EPOS | SENNHEISER Adapt 660 (1000200) - Dual-Sided, Dual-Connectivity, Wireless, Bluetooth, ANC Over-Ear Headset | for Desk/Cell Phone & Softphone | Teams Certified (Black), 207 mm x 65 mm x 181 mm

tl;dr I would buy these again and recommend them to others for work use.I'm a Windows and Android based user so this is the perspective I'm coming from. I can't comment on other OS experiences, but for me my overall experience has been a good one.I use these all day long and have for the last month. Fit wise I like that they have slightly larger ear cups than several other similarly purposed headsets I own. They feel a little warmer more quickly on my ears than others, but not by much. And really after having these or any headset on my head for 6-8 hours straight it doesn't really matter at that point. My ears are going to be warm regardless. I also like that these are super lightweight and fold up relatively small. I see myself using these as my traveling go-to headset once I'm traveling again. (boo covid)The ANC works great and in most situations I have it turned to the adaptive setting, which can be adjusted via phone app. The mic monitoring or "side tone" is OK. I wish it could be turned up higher, but this is a minor gripe. For example the Plantronics Voyager 8200UC's mic monitoring is louder and more pronounced. It is still definitely loud enough to hear yourself and not have to pull the one ear on and one ear off routine. My personal preference would be to make the max mic monitoring volume maybe top out at ~1.5x what it is now so the user can adjust it down as needed. Who knows maybe that will be done via a future firmware update?Microsoft Team's works great with these. The call quality is good, but becomes game changing-ly good after enabling the "Call Enhancement" feature. I can't stress that enough. Turn that feature on now! If you close your eyes while on a call, hopefully not when you are video conferencing, it does sound like you are talking to someone in the same room and is exceptionally clear. Speaking of call quality nobody has had any issues hearing me. For a boom-less design these do really well. I tested out the mic's noise cancelling ability via various background noises. Even with a fan blowing directly into my face I can still be understood albeit more "grainy" sounding as the fan's noise is being removed and my voice left in. Pretty cool stuff. If you have a loud keyboard... well... it does what it can, but no boom-less design will be able to completely kill mx blue switches... let's just be honest. It does do an OK job, but keyboard clicks will be picked up if you are rolling with some loud switches.Using the USB dongle to a laptop and a phone via Bluetooth gives a good experience once paired, but I do have two gripes:Number one is the pairing process. If you plug in the dongle first BEFORE pairing to your phone be prepared to be frustrated. My experience is it simply would not allow me to pair to my phone with the dongle active. It would go into pairing mode and my phone would see the device, but it would just give an generic unable to pair message. As soon as the dongle is unplugged I could pair with no problems and plugging the dongle back in worked as expected. Maybe this will get fixed via a future firmware update, but it was frustrating to hit this. So just be aware of this and the simple solution of unplugging the dongle when attempting to pair to a phone.Number two is the Windows/PC audio interrupt. By this I mean when a sound is played on the PC it interrupts the phone Bluetooth audio. For example a Teams meeting starts on the PC. The PC should take priority over the Bluetooth audio in this situation. This works and if I'm playing music on my phone it is paused and the meeting audio takes over. An example problem sound could be with an email arrival notification that is played on the PC. It also interrupts the Bluetooth audio. So it totally makes sense that this should interrupt and it should be played, but this should ONLY happen when the PC volume is NOT muted. Even with the PC volume muted it STILL interrupts the Bluetooth audio. This is one super annoying thing that should not work this way and I'm hoping this will be addressed in the future. With the Plantronics Voyager 8200UC if I muted the PC audio it did not interrupt the phone Bluetooth audio when emails arrived and a sound was played.Overall though I really like these. For business use they are great and would highly recommend them for someone who is in and out of Microsoft Teams meetings all day. For background music or streaming while working these are also great. Also no complaints on the battery life or the wireless range.

Headset wonderful, Microsoft sucksOn my first day with this headset, working from a very noisy home with multiple children including a toddler, stay at home wife and a dog. For the first time, while working with the headset on, I have really no idea what the family is doing. Conversations are muffled and lost in the background of my music. Due to great quality noise cancelling, i don't need much volume on the headset to hear meetings or my music while working. Also, the smart mic on this headset doesn't pick up much of the family sounds when I'm on a call. My colleagues say that my sound quality is excellent.This headset also worked flawlessly with both of my phones the first time I tried with each.Microsoft sucks so badly, this headset is certified for Microsoft teams, so you would think it would work the first time, flawlessly with the teams desktop app or the web app on a windows 10, company provided laptop, right? WRONG. In order to use with microsoft teams and other conferencing or softphone apps on a microsoft windows 10 laptop, for some stupid reason a USB dongle is required. Don't ask me why microsoft requires a dongle when this headset works just fine with my phones over a direct bluetooth connection.So I plugged in the dongle and the headset simply does not work with microsoft teams desktop app. When I make a call or join a meeting using the desktop app, the call immediately hangs up or backs me out of the meeting. I'm very techical (an analyst-programmer), have put apps and websites into production and done backend programming. I tried all kinds of troubleshooting, dropping all other bluetooth connections, resetting devices etc. This headset is no go with microsoft teams desktop app. I even contacted EPOS support they wanted me to reinstall the firmware on this brand new headset ( so you are shipping headsets with old firmare???), but that requires admin rights on my laptop which my employer won't give me . And I don't have any other microsoft computers in my house because Microsoft really sucks. Microsoft & Epos are you listening?So I tried the teams webapp. Now the headset does work very well with the microsoft teams webapp, and my colleagues reported that the audio quality was terrific. So since I need this headset to protect me from my noisy, distracting family, I will just use the teams webapp and forget about the teams desktop app I guess.By the way, this is the umpteenth time that microsoft has wasted my time or required strange workarounds due to their shoddy software. I only use microsoft if someone pays me a lot, and I will advise them to eliminate all microsoft products from the enterprise for many reasons.