Sennheiser DECT D10 ‘The Class Changer’ Headset

D-10-USB---Product-shoot-04 copy

Firstly I would like to say happy new year and welcome to my first review of 2015.

This review in particular I’ve been looking forward to writing as its one I think changes the DECT headset market.

As you will be aware I’ve reviewed other DECT headsets in the past including Sennheiser’s other offering the DW Office so when I got the D10 I did think why would Sennheiser bring another variant of the same type of device into the product line? Well be assured this isn’t another skew on the DW Office and is in fact a unique device in its own right.

With all my reviews, my first point of call is ‘what is it to be benchmarked against’. To do this I looked at the headset features then tried matched them against the competitor’s offerings. Well this in itself became a small challenge as Logitech has the H8020 DECT headset which almost fits the bill. Plantronics doesn’t really have any desk type (Stand Based) DECT headset with the Savi Range being the closest solution. Then lastly Jabra was the nearest match with the Pro9xxx range of DECT headset but this is twice as expensive to buy. This got me thinking, has Sennheiser ‘backed’ the wrong horse in this race or was the other vendors behind the curve.

Well let’s see.

Like other reviews I continue to bleat on about how none scientific approach to testing I do. (no I don’t have a sound booth, nor a room with formed triangles stuck to the walls). Instead my testing is one which a normal user would have at there disposal. eyes and ears.

As usual I have split the review into the segments of benchmarking below, but for 2015 there is a new benchmarking test called ‘what lies within’.

–     Audio Quality (Lync Audio Calls)

–     Features

–     DECT Range

–     Battery Life and charging time

–     What lies within

–     Price point and availability

Firstly lets start off with the Audio Quality.

As with what now is tradition with Sennheiser’s products both in the UC and Consumer markets, the Audio quality is exceptional with crystal clear HD sound for both inbound <listening> outbound <speaking>. What was interesting is the sound was that good on one call I could hear the callee breathing into their headset (it was another manufacturer headset which I wont comment on ) AND they said they wasn’t wearing it to close to their face/mouth.

With the sound quality so good, it got me thinking, could I think of another headset which has better sound quality? Actually I can’t as the Senneheiser D10 is up there with the best in class.


SlimLine Design

The D10 come with a sleek slim desktop charging stand which clip two parts together to my a kind of X shape bracket angle. The main part of the based unit is formed of black matt polyurethane, and the bracket arm is a block of milled aluminum. The base unit with the headset on stand takes up very little desk real estate and looks smart and welcoming.

USB Charging 

Having only USB charging is one of the differentiators between this and the Jabra 9xxx series as the Jarba DECT headset does require an external power source to charge the headset meaning another plug socket as well as a USB connection is needed. More on the charging time further down within my review.

Audible Ring sound from the Base unit

FINALLY, I thought we were never going to see a DECT headset with a base unit ring alert option made again. As a consultant this is one of the biggest bugbears of end users; not being able to hear the phone ringing. If this was manufactured 12 months ago, I could have literally sold 2500 of these to two customers. In the end they had to go with the Busylight options, which they still think, isn’t ideal.

Multi Pairing option or (supervisor silent listening)

Like the DW office the D10 has the capability to allow upto 3 people to bridge into the call via the base unit. Again this is another perk of the Sennheiser range and one I know is a benefit within contact centre scenarios.

DECT Range

The DECT range is excellent on these D10, with literally one of my customers walking down a floor and walking 100 metres from his desk and the call was still current and connected. Very impressive

Battery Life and charging time

12 hours of talk time from a full charge AND without the requirement for socket power charging as all the charging is done via the USB connection.

A power boost change 20mins gives the headset 3 hours of talk time in my test.

Lastly a feature that Sennheiser calls Activegard? I had to look this up as it’s something new to me in the headset world. In short it means it protects the user from someone screaming/shouting or some other instant loud noise being sent down the headset. In truth this is something which I haven’t experienced as an issue before so I can really comment on if the headset does what it says.

What Lies Within

So to put a bit of meat around this new 2015 feature is to take apart the device to see how they have been manufactured. The reason for doing this is its ok on day one when you the customer receives your nice new shiny headset, but what is the affect 3 months down the road of daily use if the devices is poorly assembled at manufacturing. Its worth noting i will not embarrass manufactures with pictures (and believe me i could on many devices) on the innards of the device, but i will be clear on if i think the device will stand the test of time.

So how does this compare when i looked within the D10. Im pleased to say this device is built to last. 🙂

Price point and availability

RRP on one of these devices is £179.99, however you can get these for around £135.00 through distribution.

The D10 is available now for selection and purchasing


Whats in the Box

Base station
USB cable
Headband (detachable)
1 bendable ear hook (mounted on headset)
Printed Quick Guide
Printed Safety Guide

My own internal questions and thoughts

Could Sennheiser make or made this device any better?

I don’t actually think they could have made this much better as it’s one of the best devices for both build quality, sound, features and price I’ve ever used and tested. I can see this being one of the main product lines for Sennheiser in 2015.

With my arm forced up my back (military style), my only enhancement which is not unique to the D10 or Sennheiser, but one of a general observation, is the fact we are coming into a stage in the headset cycle where these endpoints have to be diversely mobile. What I mean by this is we as users want the beauty of being able to roam to the far flung corners of the office while still connect via DECT to the call. Yet in the same breath, we also want the flexibility that we can if we want to walk with our laptop in hand and the device is clever enough to realise this a switch to using Bluetooth seamlessly instead OR if we was on a call at our desk have the ability to flip to the Bluetooth option and which was paired with our Mobile/Cell phone and for the call continue without a blip. OR another scenario would be if we was on a DECT call and we drifted out of range of the base station, the headset device was clever and it automatically transferred the call to you Mobile/Cell (again which was Bluetooth’d to the headset). ?not wanting much am i.

What is the market place and which type of customer would this device be suited for?

I personally wouldn’t ring fence this to a certain user group as I don’t see more of a benefit over another group or personnel department. That said in many call centre and administration type roles I can see this being a perfect winner. For example, how many times do you get a call via lync when you are writing or not paying attention and the computer your using doesn’t have a ‘ringer’ in the PC (now 99% of new desktops don’t have a internal sound/speaker)? Well with the D10 them days are gone as the base ringer now alerts you to the call. OR the base unit LED lighting provides awareness to the ringing call.

Would I recommend it to customers?


So were does that leave me with the D10? It’s fair to say this device now honors the primary place on my working office desk and now the go to device of choice. The DW Office has now been retired to my homelab.

In terms of ‘lync star’ rating, what does this device deserve and why? For the features, sound and price point and market awareness, it s with pleasure and for the first every headset review I would like to award the Sennheiser D10 the full 5 stars.


Simply put this is an excellent device and one I would highly recommend. Remaining vendors you are playing catch up.


Lync 2013 & 2010 – HighEnd Optimised Wired headsets for Lync & Skype


Hello Readers

Following a months worth of bench marking tests of the three main vendor high-end wired headsets available to Lync (optimised devices). Below are the details on the devices and information around the benchmarking criteria plus my unbiased opinion. 

With what is now tradition, i will be using the same metrics/categories as i have done in the past with other Lync headset/devices reviews completed. I will score each headset on the following metrics, plus also giving an unbiased synopsis including RRP pricing guide.

The four categories are (Sound, Functionality, Usability, Cost) AND a new Category

  • Sound quality of Music playing– this is something new I’ve added to the reviews and i would say it isn’t something i would use as the main driver for buying or not buying a headset on. The reason for adding this is on my other blog posting at NorthernLync in the past, i have had people asking me about using a Lync headset to listen to music between calls. Personally i don’t think any optimised Lync headsets were manufactured to be a dedicated music playing device, but as I’ve been asked the question I’ve added it into the review anyway.

From Left to right are the ‘flagship’ headsets from each vendor. (Jabra BIZ2400, Plantronics Blackwire 720 and Sennheiser SC630) ***All the headsets i was testing were in mono ear’d format. (my preference)


JabraBiz2400Blackwire 7xxSennheiser sc630


First up the Jabra Biz 2400

  • Sound – It has to be said from the start of this review, all the headsets had the sound quality marked as excellent. For the Jabra i found the inward sound to be crystal clear on Lync calls. Also i had comments about the clarity of the outward sound. On a few occasions the recipient of the call did ask if i was the only person working in the office as they couldn’t hear any background noise whatsoever. Also on the odd occasion where i was not talking i had the end recipient saying ‘hello’ back at me as the headset almost felt like to them it had put the call on mute and as described by one caller as ‘pure silence’. That said i was impressed with the sound quality for day to day Lync calls.
    • Sound quality via Music playing – I found it a odd experience and maybe this was due to listening into one ear only, but I think the music lacked bass, and high pitch tones on some songs played. Also it was a little bit ‘tinny’.
  • Functionality – As well as good call quality sound, the BIZ 2400 comes armed with a ‘puk’ sized device attached to the cable. On standard day to day use this is were you would alter the volume and mute/answer calls. The wheel function in the middle endlessly turns and a in-ear clicking noise on rotation is heard. One the secret weapons the BIZ 2400 does have in its armour is within the same Puk device that holds a bluetooth receiver which allows you to pair with your mobile phone and allow for using your headset to make and take mobile phone calls. neat eh!! well hold on a second… it is a neat feature until you close your lid of your laptop, or turn / lock your desktop.!! at this point the bluetooth dongle in the PUK looses the power and without a inbuilt battery it stops working.!! Also i should note the boom arm also rotates a full 360* which i guess is a feature but not something i would play on as part of promoting the product.? 
  • Usability – I used this headset for a week in the testing phase, and i can say i never thought anything untoward about it.. its a nice piece of kit. it was comfy to wear for long periods, sound quality was good. The nice leather ear pads felt like cushions against your ear. Also within the box came a kind of nylon bag to keep your headset safe if you was in the need to remove it each working shift for storage
  • Unbiased Verdict – I was moderately impressed with the BIZ2400, and would recommend it to customers who were biased towards Jabra and who was in the market for a high end device. ALSO Jabra tells me there are 20 different types of this headset to suit different scenarios, so if your in need of a custom/different headset requirement its worth looking on their website.
  • RRP – £129 is the market rate on these at this moment which sits in the middle pricing of the three devices
  • Link  

The release date is available now


Next up the Plantronics Blackwire 7xx Series 


  • Sound – The sound quality with the Blackwire 720 is excellent as you would expect with any premium high end device. There are some really nice additions to the features for sound on this device which makes it a more preferred headset over the Jabra. See below.
    • Sound quality via Music playing – Now if you want a headset for Music playing, then this and the Sennheiser below are the ones to choose. The Blackwire boasts stereo sound which came across as a really full crisp sound on playing a variety of music types. (sorry I didn’t try it on heavy metal), but for ‘day to day’ music it sounded great even through the single ear.! AND a feature which i thought was brilliant was the fact that when you was playing music and for whatever reason you took off the headset, it would pause the music automatically.
  • Functionality – As well as the really good call quality, the Blackwire series is packed with gadgetry which is the leader in its field. Below is some of the neat gag which is inbuilt into the headset
    • On pickup of the headset when a call is ringing in your Lync client, the headset automatically answers the call;
    • Same bluetooth style connection built into the headset but this headset also comes within a inbuilt battery meaning you can unplug it from the desktop/laptop and the headset still work over bluetooth;
    • If on a bluetooth mobile call, then the device is clever enough to put your Lync status as in a call.;
    • The ability to move a call from your mobile to Lync via the headset without having to redial;
    • Headset battery status visible from the toolbar of your desktop/laptop, so you know how much change you have to play with on bluetooth only calls;
      • If there was a very small negative to take from all the great functionality is that the bluetooth range isn’t particularly vast. I can only get to 3 metres from the mobile phone before the sound became choppy.
  • Usability – I love it, i would be happy to use this headset day in day out, both for calls in quiet and noisy places. It also comes with a formed padded carry case to provide a good level of protection.
  • Unbiased Verdict – I can’t state enough i think this is one of the best wired headsets I’ve ever used with Lync. The features are top notch, the sound is excellent for calls and music. This headset without doubt will be going into my kit back for client recommendations.
  • RRP – less than £100 at this moment, which makes it £30 cheaper than the Jabra BIZ2400. In my opinion i would be going for the blackwire over the BIZ2400 even if the pricing was the same. For me Its a no brainer going for c720 over the BIZ2400.
  • Link
The release date is available now


Last up is the new kid on the block, the Sennheiser ‘Century’ SC630


  • Sound – What can i say, by default the sound quality of all the Sennheiser devices spreads though there product range. The SC630 isn’t an exception to this as the audio quality is high-end. Sennheiser states that the Audio is HD audio which i do agree with.
    • Sound quality via Music playing – As with the the Plantronics Blackwire device, the Sennheiser headset also sports the concept of allowing for high quality stereo music. this it does really well, and i would say it is a better sound on music playback over the Plantronics. This music sounds rich and clear.
  • Functionality – As well as the excellent call quality of the sound for calling and Music, the Sennheisers SC630 build quality is to a high degree using premium end materials. The look and feel of the headset ouzes premium grade quality. Although the functionality isn’t on the same level it terms of gadgetry, Sennheiser has chosen to go down the build and quality road to give the end user the best sound and device quality experience. Below are some of the features detailed from Sennheiser on the SC6xx devices.
    • Sennheiser HD voice clarity – wideband sound for a natural listening experience
    • Ultra noise canceling microphone for perfect speech transmission
    • Sound-enhancement profiles – perfect for communication and music
    • High-quality neodymium speaker for outstanding HD audio quality 
    • ActiveGard® technology protects users from acoustic shock and sudden sound surges
    • Call control unit allows for easy answer/ end a call, volume up/ down, microphone mute and redial last outgoing call
    • 3 years international warranty
  • Unbiased Verdict – If you want a excellent sounding audio headset which is as good running Lync calls as music playing, plus with a excellent build quality then the SC630 is the one of choice.
  • RRP – As this device is relatively new to the Lync market, the price point is the highest of the three devices at £149 per headset. That said, that old saying goes… you get what you pay for and with the SC630 its high-end quality throughout.
  • Link
The release date is available now
  • Overall Verdict and Star Ratings.

I enjoyed using all the devices i tested and reviewed, they all did what i expected them to do. Also it was refreshing that i didn’t have to write any negatives about the devices. If i had to choose a winner and a preferred device of choice, based on build quality and sound preferences i would suggest the Sennheiser SC630. If you was wanting more technical features along with excellent sound quality to match then the Plantronics c720. Sadly i think out of the three headsets the BIZ2400 just didn’t cut the mustard in both in build quality or technical options.

Jabra BIZ2400 StarStarStar

Plantronics c720 StarStarStarStar

Sennheiser Sc630 StarStarStarStar

***Also to note, all of the headsets were tested with Office for Mac Lync as well, and all preformed as expected.

Thanks for reading. the next device review will be around the mini conference devices.


Iain Smith

Ultra noise canceling microphone for perfect speech transmission 

Lync 2010/2013 – Dect Headset Review (Sennheiser DW Office, Logitech h820e, Jabra 9470pro)



The below is a unbiased view on three dect headsets that are all certified and compatible with lync 2013 and Lync 2010.

Using the same metrics/categories as i did with the bluetooth device review, i will score each headset on the following metrics, plus also giving a Pros and Cons synopsis including RRP pricing guide.

The three categories are (Sound, Functionality, Usability)


(Left to right, Sennheiser DW office, Logitech h820e, Jabra 9470pro)

Dect Headset No1

Sennheiser DW Office

  • Sound – There is one thing to say with all the Sennhieser devices I’ve used and reviewed ALL have the best sound quality across the UC field. Again like the Sennsheiser bluetooth Presence device the sound quality is crystal clear. I’ve been using a DW office now for many months, and as the other two dect headsets have been released i’ve used these other devices for weeks at a time but it must be said its never ever been in my mind to replace the DW office. Simply put, its head and shoulders above the Logitech dect headset for sound. I’ve used this dect device in my daily job accepting calls from SIP connections/PSTN and Mobile and the device has never missed a beat.
  • Functionality – As with all three headsets they all almost mirror each other with basic  functionality with some having nice little extras over the other. For me the Sennheiser has a couple of neat features. One – being that it does not need a power supply to feed it an electric current. Its happy to utilise the USB connection to the headset to power it. (its worth noting this is the only dect headset in the review which can do this). Two – the device can also twin and connect to a desk-phone for better together capabilities. Three – you can twin unto 4 headsets to one base station. (this works well for training purposes etc), Four – it can be connected to your mobile/cell phone as well as a Lync headset.
  • Personally a trick the Sennheiser doesn’t have which would in my opinion would have been the icing on the cake is the lack of ringer in the base unit. More and more companies are not buying new desktop machines with sound cards and speakers these days as they are doing this to cut down on the revenue costs on hardware.If the DW office had the ringer function this would be perfect. I would hate to think one of my clients dismissed this excellent device due to a lack of ringing from the base unit. (note: only the Jabra dect device has a ringer in the base unit, but sadly that lacks in other areas)
  • Usability – I can sit with the headset on for hours and even sometimes i forget im wearing it until I’m reminded :). there is comfort and quality all around this headset. On first opening of the box, you might find the boom arm is very close to your cheek, this is by design and within the box is what Sennheiser calls a cheek deflector which is a little piece of plastic which snaps onto the start of the boom arm and makes the arm move away from your face area. The ear peice is leather and very comfortable to wear.
    For the distance on how far the dect range is (Line of sight 134mtrs, within a office <none line of site> 46mtrs)
  • Unbiased Verdict – the quality is what you would expect from Sennheiser devices. excellent sound and build. I wish it had a ringer in the base until as this would be in my opinion be the perfect all round product. Price point of this dect headset is the most expensive and could be seen as to expensive by some.
  • RRP – £299
  • Link

The release date is available now

Dect Headset No2

Logitech h820e

  • Sound – When i first saw this headset at the UC Expo in London in March, i couldn’t wait to get one of these devices to test and ultimately use in my day to day job. Oh how disappointed i was with this device when i received it. The sound is just awful, the boom arm and mic is super sensitive to the point where you can’t stop the sensitivity. (this is the same with the USB wired version). You literally have to move the flexible boom arm to a right angle to stop the sound distortion. Even with turning the sound down to the minimum setting within Lync makes no difference.
  • Functionality – Barring the sound issue, functionally the headset has a unique feature of showing the incall presence at the backend of the boom arm, this in itself is a nice feature when the headset is in use, people can see your on a call. As with the Sennheiser device, this dect device also doesn’t have a ringer option within the base unit. When the headset isnt being used you dock the headset vertically back onto the base unit, and there has been a few times where i thought it was docked but due to it being placed into the dock misaligned, it never charged and wasnt good enough to use on my next call.
  • Usability – The headset is really comfy with nice leather big ear pads and leather headband. Logitech have really thought about the comfort of this headset and it is as good if not better than the Sennheiser and Jabra devices . For the distance on how far the dect range is (Line of sight 64mtrs, within a office <none line of site> 31mtrs)
  • Unbiased Verdict – I can imagine the Logitech guys sitting round a meeting room table and saying ‘we have X amount of budget how do we use it…’, i think they spent 85% on comfort, and the remaining on the actual base unit, headset and packaging. If there was one saving grace for the logitech device its the price, its unbelievably cheap for a dect headset. You wont find a cheaper dect headset on the market. Downside is the sound, its a massive issue with this headsets.. Sort the mic sensitivity Logitech!! fix this and you will have a great UC device at a very good price.
  • RRP – £139.
  • Link –

Jabra 9470 Pro

  • Sound – The sound from this headset is really good, nothing really to complain about. On using it i hear no white noise and distortion, and the difference between the Pro 9470 and the Sennheiser DW office is the DW’s sound is more digital and clear. That said if id bought the Pro 9470 i would be happy to use it day to day.
  • Functionality – In terms of design of both the base unit and headset are both nice. i like the base unit lcd touch display which enables you to flip connections from desktop to bluetooth/mobile phone. ALSO it has the ringer which i really like and one i see customers asking more and more for. As for the headset it fits nice with large leather ear pads, and it also feels light on your head.
  • Usability – I used the Pro 9470 device of choice before i received the DW office. If the sound was just a little bit clearer i would be hard pressed to choose between these devices. I cant emphasise enough about the ringer feature and how useful it is.
  • Unbiased Verdict – This is a really good bit of kit, and one i would recommend to a client. There is nothing i can fault.
  • Overall Verdict

This is a relativity simple verdict, and if you see this as gold, silver and bronze awards. In third place is the logitech h820e this is because of its poor sound offering. In a joint first place is the Jabra Pro 9470 and the Sennheiser DW office. Reason why i cant make a distinction between these devices is due to the following. For the Jabra Pro, i cant fault the device in anyway, i like the base ringer option, and the base lcd touch display. Plus the device is £100 cheaper than the sennheiser DW office. For the Sennheiser DW Office I can’t get away from the quality sound and hardware. Also with the ability to add additional headsets to the base units, its perfect for training purposes. Downside for me is the price, you have to have deep pockets to afford a few of these if you are a customer.

– If you are a person who wants the best sound quality then in my opinion the Sennheiser DW Office is the best

– If you are a person on a limited budget and aren’t bothered by having the boom arm at a right angle. The Logitech is a good match

– If you are a person who wants a comfort fit with good sound quality and a long range of connectivity then the Jabra Pro 9470 is the one

Thanks for reading.


Iain Smith