TL/DR: Buy these great headphones.
With my new telework routine involving up to 8 hours of tele- and video conferencing daily, a comfortable, high quality headset was necessary. My previous ones became uncomfortable after about three hours and the sound quality wasn't great, especially in the MS Teams environment, where echoes and audio defects seem to be the norm.
Truth in advertising. I have owned many Sennheiser (over 10) products over the years, and I like the "Sennheiser sound." Some don't like it.
Having said that, these headphones are excellent. Great sound isolation and two forms of ANC. Extremely clear audio, and I've been told that my voice is extremely clear. I used them for nearly twelve hours straight (MS Teams, Cisco Jabber, a telemedicine appt, and phone) after the first time I charged them, and the indicator lights said I still had 3/5 charge. I wore the headphones the entire twelve hours, and my ears still felt great. None of the echo chamber "pressure" I get from Bose and Sony ANC headphones that is so fatiguing. And did I mention that the sound quality is fantastic? The headset paired quickly and easily with my phone and computer. I will say that connection is faster, easier, and more reliable using the dongle than using my computer's onboard bluetooth. No idea why, but it is. Range is good, not great. I can get up and head to the refrigerator (30-35 feet, two walls), and the headset remains connected with no garbled communication. Another 15 feet and into the garage, and it gets garbled and the connection drops (both phone and computer). The dongle has about a 5-10 foot longer effective range than my phone.
The "cons."
1. Price. I got mine through the Amazon Warehouse, and at the ~$140 I paid, they are a fantastic deal. Full MSRP of $400+...maybe not so much, but I don't think any headphones are worth that. For example, Sennheiser Orpheus headphones are otherworldly amazing, but $55,000? Look them up, and try them out if you are ever near the Soundscape. And if you buy them, please let me borrow them a lot. But are they worth it, to me...nope.
2. The headphone isolation is so good that you'd likely be screaming on conference calls without realizing it. Sennheiser solved that by piping your voice into the headset. It sounds a little computerized and is definitely strange, at first. It was very weird when I started using them, and I actually was determining whether I could live with it, or if the headphones were heading back into the shipping box. By the end of the first day, though, I didn't even notice it. You'll probably go through the same stages. Give your ears a chance to adjust. It won't be what you are used to, likely, but I'll bet the weirdness fades very quickly.
3. The mics are very sensitive. This is a huge pro, but it becomes a con when you are in active ANC modes and drop something on your desk, or scratch your leg. The sound piped into the headset seems vastly out of proportion. The people on the calls assure me that the sound isn't heard by them, but you will hear it...and loud. Still looking to find a setting to mute this. Nowhere near a deal-breaker for me, but it is a con.
Durability will have to be determined over time, but I have Sennheisers that are over a decade old, and one set that is 21 years old. They both still work great, and have only needed new earpads in my time of ownership. These seem to be built to the same quality standard, so I'm not expecting issues.
Bottom line: Best headphone purchase I've made in a very long time. No regrets.
This product is available as Renewed.
Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, Wireless, Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) (Renewed) $227.85 & FREE Shipping
Works and looks like new and backed by the Amazon Renewed Guarantee
Works and looks like new and backed by the Amazon Renewed Guarantee
Consider a similar item
Customers who viewed this item also viewed
Page 1 of 1 Start overPage 1 of 1
From the manufacturer
Compare with similar items
This Item  Sennheiser MB 660 MS (507093) - Dual-Sided, Dual-Connectivity, Wireless, Bluetooth, Adaptive ANC Over-Ear Headset | For Desk/Cell Phone & Softphone/PC Connection | Skype for Business Certified (Black) |  |  |  |  |  | |
| Price | Currently unavailable. | -26% $280.11 List: $379.95 | -13% $348.00 List: $399.99 | $99.00 | -5% $119.99 Typical: $125.99 | $349.00 |
| Delivery | — | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it May 14 - 16 |
| Customer Ratings | ||||||
| Sound quality | ||||||
| Battery life | ||||||
| Noise cancellation | ||||||
| Comfort | ||||||
| Sold By | — | Amazon.com | Amazon.com | Hot Audio | DealX | Prime Warehouse Inc. |
| connectivity tech | Wireless | Bluetooth 5.2 | Bluetooth | Wireless | Wireless, USB-C, 3.5 mm jack | Wireless |
| headphones form factor | On Ear | Over Ear | Over Ear | Two-ear | Over Ear | On Ear |
| connector type | wireless | wireless | Stereo Mini Jack | wireless | wireless | wireless |
| noise control | active noise cancellation | active noise cancellation | active noise cancellation | active noise cancellation | active noise cancellation | active noise cancellation |
| headphones jack | — | 3.5 mm Jack | 3.5 mm Jack | 3.5 mm Jack | 3.5 mm Jack | — |
| cable feature | Without Cable | Without Cable | Without Cable | Without Cable | Without Cable | Without Cable |
| control type | Media Control | Voice Control | Voice Control | Call Control | Media Control | Touch Control |
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
Top reviews from other countries
Marie C Turcotte
Not perfect, but the best for the price
Reviewed in Canada on June 10, 2020Style: MB 660 UC MSVerified Purchase
VeeZ PeeK
Balance of business features (talking capabilities) and great sound/battery life
Reviewed in Canada on December 30, 2019Style: MB 660 UCVerified Purchase
Adam K
These headphones do an great job at blocking ambient sounds
Reviewed in Canada on March 31, 2017Style: MB 660 UC MSVerified Purchase
Amazon Customer
A bit underwhelming for $500.
Reviewed in Canada on July 14, 2020Style: MB 660 UCVerified Purchase
