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Technical Details
- Bluetooth 2.1 for hands-free convenience and advanced A2DP profile for optimised Stereo sound
- Invisible microphone with high-performance sound quality, padded ear-cushions for comfortable fit
- Direct cable option, Easy headset controls, 2-year international warranty
- Headset folds into a compact bundle, headband is metal-reinforced for durability
- Recharge battery via USB or the international wall charger (supplied)
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Product Description
Manufacturer's Description
The MM 400 is a state-of-the-art Stereo Bluetooth®headset for multimedia mobile phones. With one press of a button, you can quickly switch between calls and music delivered in superb stereo sound. The invisible high performance microphone ensures that conversations are clear, making this headset the perfect all-in-one sound solution. The MM400 offers wireless freedom through Bluetooth which guarantees hands-free convenience without wires. It features an invisible microphone with high performance sounds allowing for clear conversations. With a direct cable option this headset can be applied for use on airplanes (airline adapter included). This headset is suitable for long journeys or prolonged wear with padded ear cushions provided for your comfort. Easy-2-GO – the headset folds into a compact bundle for travel and storage, while the headband is metal-reinforced for durability. Recharge it via the USB port on your laptop or the supplied lightweight wall charger with different plug fittings for Europe, the USA, the UK and Australia. Connect everywhere – to mobiles, laptops, MP3 players, or in-flight entertainment systems with an all-in-one headset solution. Sennheiser’s 2 year warranty provides you with peace of mind so you can spend hours of listening, chatting to friends or colleagues, secure in the knowledge you have invested in quality and reliability.
Product Description
Sennheiser Bluetooth Stereo-Headset MM 400
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Customer Reviews
Most Helpful Customer Reviews
9 of 9 people found the following review helpful
Let me start by saying that it is not normal for me to take the time to write a review. I find that very few products meet my high expectations, however in this instance I am compelled to share my experience with others.
The purpose of me purchasing these headphones was to go with my new iPad. They paired instantly and I was anxious to clarify the lip sync delay reported by some users whilst watching video. I can confirm that there is no audio delay when watching video on iPad. That is to say the dialogue you hear in the headphones is in sync with what you are watching. Repeating myself there is NO LIP SYNC ISSUE ON iPAD.
These headphone can control the Play/Pause and volume up/down features on both iPad and Iphone. The track skip and fast forward/rewind aren't presently supported on Apple products however this is not the fault of the headphones. They do contain the technology but it is the iPad and iPhone bluetooth firmware that do not, so the headphones are not at fault and I am somewhat bemused how other people writing reviews on this product deduct points/marks/stars for this issue. All the features will be fully supported when Apple update their bluetooth firmware in a future update.
When your iPhone rings it will mute your music and you hear the ring tone in the headset and by pressing the large call answer button you can accept the call. The microphone on the earpiece is almost invisible and I was astonished at the quality of the call and so was the person on the other end of the phone. When you or the other person hangs up by pressing the large button on the headset your music resumes playing where you left off. Enough Said.
I imagined that the five control buttons on the right side of the headset would be over complicated and confusing to use however they are not. They are easy to locate with your right hand and within a few minutes of practice you will have mastered their operation.
Sound quality is good. If like most of us your music has been ripped at 320kb or less then these headphones will do your music collection justice. If you are looking for reference series headphones and expect lossless quality audio then look elsewhere.
I am not going to repeat what other users have written but in summing up I feel liberated by these headphones and this is a quality product that does what it says on the box and it does it very well indeed.
The purpose of me purchasing these headphones was to go with my new iPad. They paired instantly and I was anxious to clarify the lip sync delay reported by some users whilst watching video. I can confirm that there is no audio delay when watching video on iPad. That is to say the dialogue you hear in the headphones is in sync with what you are watching. Repeating myself there is NO LIP SYNC ISSUE ON iPAD.
These headphone can control the Play/Pause and volume up/down features on both iPad and Iphone. The track skip and fast forward/rewind aren't presently supported on Apple products however this is not the fault of the headphones. They do contain the technology but it is the iPad and iPhone bluetooth firmware that do not, so the headphones are not at fault and I am somewhat bemused how other people writing reviews on this product deduct points/marks/stars for this issue. All the features will be fully supported when Apple update their bluetooth firmware in a future update.
When your iPhone rings it will mute your music and you hear the ring tone in the headset and by pressing the large call answer button you can accept the call. The microphone on the earpiece is almost invisible and I was astonished at the quality of the call and so was the person on the other end of the phone. When you or the other person hangs up by pressing the large button on the headset your music resumes playing where you left off. Enough Said.
I imagined that the five control buttons on the right side of the headset would be over complicated and confusing to use however they are not. They are easy to locate with your right hand and within a few minutes of practice you will have mastered their operation.
Sound quality is good. If like most of us your music has been ripped at 320kb or less then these headphones will do your music collection justice. If you are looking for reference series headphones and expect lossless quality audio then look elsewhere.
I am not going to repeat what other users have written but in summing up I feel liberated by these headphones and this is a quality product that does what it says on the box and it does it very well indeed.
22 of 23 people found the following review helpful
My reasons for buying these headphones were as follows:
- To listen to mp3's on my Google G2 wired or wirelessly
- To listen to audio wirelessly on my Cowon Q5W
- To make and receive calls on my G2 both wirelessly and wired for when battery is low on either or both the headphones or my G2
- I am a fairly heavy user of headphones and needed something for an average of 3 hours use per day
Sound quality - I am really satisfied with the quality of audio when listening to mp3's. Obviously, I know that mp3 will not test the limit of the MM400's but suffice to say, they are, as you would hope, a huge improvement on the basic headphones supplied with my phone. It's great to hear basslines you didn't know existed!
Connection - This has been frustrating but I will lay this firmly at the feet of my G2 phone and NOT the MM400's. Often, I cannot get the phone to connect to the MM400's, like I said, I put this down the phone and not the headphones - For all you G2/Android users out there, the best way I find to get a connection is to switch phone Bluetooth ON, then switch MM400 Bluetooth on, then switch phone Bluetooth off (wait for phone to say disconnected) and then back on again!
I ran a quick test with an iPhone owning friend who was able to pair first time. But I would be very keen to hear how other iPhone users get on with connecting to the MM400's as I'm sure there are many more iPhones out there than Android phones.
Connecting the MM400's with my Cowon Q5W was successful every time.
I tested the range and call connection was not lost even at 10m. There was no noticable drop in quality over that distance either.
Usability - Once connected via Bluetooth the MM400's on-ear controls are easy to use. There are 5 buttons: 1 to Accept/Hang up call & Play/Pause audio; 1 to skip back; 1 to skip forward; 1 to increase inbuilt volume; 1 to decrease inbuilt volume. These controls are found on the right ear pad.
The one draw back for me is the inability of the MM400's to make use of the inbuilt mic when connected to your phone using the optional 3.5mm cable instead of Bluetooth. For example, if the MM400's have run out of battery and you use the 3.5mm cable instead of Bluetooth, the inbuilt mic will not pick up your voice on a call. I like the convenience of leaving my phone in my pocket whilst walking but, with the 3.5mm cable connected, I cannot be heard by the other caller unless I hold my phone close to my mouth, thus rendering the MM400's partially ineffective. Obviously, this is not a problem if you are connecting via Bluetooth all of the time, but the occasion will, no doubt, arise when the MM400's run out of power and you need to connect using the 3.5mm cable.
Other - the MM400's fold in a similar way to the PX100's. Similar but not the same - where the PX range arms cross when folding, the MM400's do not. Along with the 3.5mm cable, the MM400's are also supplied with an airline adapter, and a selection of 4 power outlest connections: UK, US, Europe and Australasia (2 pin). Carry case has a pocket to house all items plus a small front zip pocket.
Over all, I am very satisfied and would recommend.
- To listen to mp3's on my Google G2 wired or wirelessly
- To listen to audio wirelessly on my Cowon Q5W
- To make and receive calls on my G2 both wirelessly and wired for when battery is low on either or both the headphones or my G2
- I am a fairly heavy user of headphones and needed something for an average of 3 hours use per day
Sound quality - I am really satisfied with the quality of audio when listening to mp3's. Obviously, I know that mp3 will not test the limit of the MM400's but suffice to say, they are, as you would hope, a huge improvement on the basic headphones supplied with my phone. It's great to hear basslines you didn't know existed!
Connection - This has been frustrating but I will lay this firmly at the feet of my G2 phone and NOT the MM400's. Often, I cannot get the phone to connect to the MM400's, like I said, I put this down the phone and not the headphones - For all you G2/Android users out there, the best way I find to get a connection is to switch phone Bluetooth ON, then switch MM400 Bluetooth on, then switch phone Bluetooth off (wait for phone to say disconnected) and then back on again!
I ran a quick test with an iPhone owning friend who was able to pair first time. But I would be very keen to hear how other iPhone users get on with connecting to the MM400's as I'm sure there are many more iPhones out there than Android phones.
Connecting the MM400's with my Cowon Q5W was successful every time.
I tested the range and call connection was not lost even at 10m. There was no noticable drop in quality over that distance either.
Usability - Once connected via Bluetooth the MM400's on-ear controls are easy to use. There are 5 buttons: 1 to Accept/Hang up call & Play/Pause audio; 1 to skip back; 1 to skip forward; 1 to increase inbuilt volume; 1 to decrease inbuilt volume. These controls are found on the right ear pad.
The one draw back for me is the inability of the MM400's to make use of the inbuilt mic when connected to your phone using the optional 3.5mm cable instead of Bluetooth. For example, if the MM400's have run out of battery and you use the 3.5mm cable instead of Bluetooth, the inbuilt mic will not pick up your voice on a call. I like the convenience of leaving my phone in my pocket whilst walking but, with the 3.5mm cable connected, I cannot be heard by the other caller unless I hold my phone close to my mouth, thus rendering the MM400's partially ineffective. Obviously, this is not a problem if you are connecting via Bluetooth all of the time, but the occasion will, no doubt, arise when the MM400's run out of power and you need to connect using the 3.5mm cable.
Other - the MM400's fold in a similar way to the PX100's. Similar but not the same - where the PX range arms cross when folding, the MM400's do not. Along with the 3.5mm cable, the MM400's are also supplied with an airline adapter, and a selection of 4 power outlest connections: UK, US, Europe and Australasia (2 pin). Carry case has a pocket to house all items plus a small front zip pocket.
Over all, I am very satisfied and would recommend.
4 of 4 people found the following review helpful
These headphones are amazing. For anyone who has used Bluetooth headphones before and tolerated the poor quality (especially high frequency sounds) this model conclusively blows them all away. The sound quality is almost on par with wired headphones. My old Sony Bluetooth headset and Sony Ericsson Bluetooth earphones are destined for the bin.
The best feature for me is the amazing sound insulation, no need to bother with the more expensive noise cancelling model - background noise is significantly cut. Even when you turn them up loud, the music can not be heard by anyone around. I can now play my music loud on the train without bothering other passengers.
All the accessories are included, even the cables seem to be made of better quality materials than usual. The price is high but is justified considering the build quality.
The best feature for me is the amazing sound insulation, no need to bother with the more expensive noise cancelling model - background noise is significantly cut. Even when you turn them up loud, the music can not be heard by anyone around. I can now play my music loud on the train without bothering other passengers.
All the accessories are included, even the cables seem to be made of better quality materials than usual. The price is high but is justified considering the build quality.
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Most Recent Customer Reviews
Revolutionary
I freed myself from wires and bought a pair of these about 18 months ago and feel compelled to review. Read more
Published 3 months ago by Benjamino
disappointing
if you are looking to use this product as a wireless headphone with a classic i-pod then just dont bother!! Read more
Published 3 months ago by simpsonf
So Disappointed
I am so, so disappointed with these. While the convenience box might be ticked, and the coolness of the wireless gadgetry is there for all to see, the one thing that lets these... Read more
Published 4 months ago by pmjb007
Not LOUD enough
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Published 5 months ago by Ommadawn1
Good product
Quality product with great sound quality!
Can connect to both phone (as headset) and Spotify audio hifi streaming from PC (as stereo headphone). Read more
Can connect to both phone (as headset) and Spotify audio hifi streaming from PC (as stereo headphone). Read more
Published 7 months ago by Mikael Sandberg
Efficient and good value for money
Extrimilly good value for money.
No messing around with cables and complete freedom once you have it on. Read more
No messing around with cables and complete freedom once you have it on. Read more
Published 8 months ago by Sérgio
Awesome
Had these headphones now for 24hrs. Initial thoughts. AWESOME.
Pro's
Sound quality is superb. Read more
Pro's
Sound quality is superb. Read more
Published 8 months ago by NickS
Good Headphones
I bought these to replace by Bose in ear phones. These phones have good sound quality and are well made. Read more
Published 9 months ago by BobbyL
Best bluetooth headphones I've tried
The Sennheiser MM 400 is pricey at £160, but (provided they're reliable - I've only had them for a few months so far) worth it. Read more
Published 12 months ago by D. R. Cantrell
Very good product
These are expensive headphone but for me the price was worth it!
I find the sound quality excellent over the standard bluetooth. Read more
I find the sound quality excellent over the standard bluetooth. Read more
Published 13 months ago by P.Mc
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