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Product 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 MM 400 is a state-of-the-art Stereo Bluetooth® headset for multimedia-capable 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 for your digital lifestyle. Using a closed, on-the-ear design to block ambient noise, the MM 400 is an ideal companion for the urban commute or frequent traveler. Advanced DuoFol transducers provide the kind of detail and frequency response you would expect out of hi-fidelity audiophile speakers. The easy-to-use control panel is intuitive and simple enough to operate with your eyes closed-- a common way of enjoying Sennheiser''''s world-famous sound quality.The MM 400 folds up for the ultimate in portability. The replaceable battery charges via USB or a wall adapter. For situations where Bluetooth is not permitted, you can use the included audio cable for a direct connection- making the MM 400 an extremely capable wired headphone as well.FeaturesWireless freedom with Stereo A2DP Bluetooth®-- hands-free conveni
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Customer Reviews
Most Helpful Customer Reviews
53 of 56 people found the following review helpful
By Scott Trindl
I was in the market for a headset for my iphone 3gs to replace the ear bud ones that came with it. Those sound pretty bad. The Sennheiser MM-400 by contrast, sounds great. One of my pet peeves with cell phones is having to hold the thing up against the side of my face. That gets uncomfortable after a while. Since the iphone also includes a very nice ipod feature, I also wanted a headphone that will do full justice to my music. The Sennheiser mm-400 does all of that and does it very well.
This Sennheiser produces top tier sound, and the stereo blue tooth works perfectly with my iphone. Sound quality is impressive and my high bit rate mp3 music files sound like real music...not the tinny sounding stuff that the standard Iphone ear buds produce. They are not an active noise cancelling headphone...for that you have to buy the next model up from sennheiser, the mm450. They do isolate you from external noise by their very design though. They are a closed back design and seal onto your ear to block out noise. I have worn them for hours at a time and they have never felt uncomfortable.
The headphone has intuitive buttons on the right earcup for adjusting the volume up and down as well as changing audio tracks and turning the headset on and off. The changing tracks function does not work at this point with the iphone, but that is no fault of Sennheisers. Apple chose not to implement that particular control function in the iphone with their current bluetooth firmware. That could change in future releases. Being able to keep my iphone in my pocket while listening to music and still being able to adjust the volume is very handy. Being able to change tracks would be nice as well.
Making or answering a call with the headset works great. If I'm listening to music and a call comes in, the iphone beeps and a touch to the main button on the headset stops the music and answers the call. Voice quality, both on my end and on the side of those who are talking to me is excellent. They have said they can't tell I'm talking on a cell phone at all. The mic is built into one of the earcups and is not visible externally. It works though.
The user replacable battery has a very long life. I have used the headphone for several days without it needing to be recharged. Recharging can be done through a USB port in a computer or through the included wall plug. You can also buy an extra battery from Sennheiser and swap out a depleted one for a freshly charged one if you will not have access to a charger for an extended period. The battery is rechargable outside of the headphone as well as while installed in the headphone.
For occasions when you prefer to use a corded headphone, the sennheiser comes with a cable that allows you to do that, deactivating the bluetooth system. For example, on an airplane when you can't use wireless devices, place your iphone in the airplane mode and use the wired headphone connection. That turns off the cell phone and blue tooth capabilities of the iphone and allows you to use it strictly as an ipod for audio and video.
The MM-400 can synch with and remember up to 5 different devices. Once you have made the initial synch, just turning each device on within range will link them.
Included in the box is a nice zippered travel pouch for carrying the headphone plus it's charger/cables. The headphones fold compactly for travel and are robustly constructed with lots of metal construction that has a quality feel to it. That bodes well for long lasting durability.
This Sennheiser produces top tier sound, and the stereo blue tooth works perfectly with my iphone. Sound quality is impressive and my high bit rate mp3 music files sound like real music...not the tinny sounding stuff that the standard Iphone ear buds produce. They are not an active noise cancelling headphone...for that you have to buy the next model up from sennheiser, the mm450. They do isolate you from external noise by their very design though. They are a closed back design and seal onto your ear to block out noise. I have worn them for hours at a time and they have never felt uncomfortable.
The headphone has intuitive buttons on the right earcup for adjusting the volume up and down as well as changing audio tracks and turning the headset on and off. The changing tracks function does not work at this point with the iphone, but that is no fault of Sennheisers. Apple chose not to implement that particular control function in the iphone with their current bluetooth firmware. That could change in future releases. Being able to keep my iphone in my pocket while listening to music and still being able to adjust the volume is very handy. Being able to change tracks would be nice as well.
Making or answering a call with the headset works great. If I'm listening to music and a call comes in, the iphone beeps and a touch to the main button on the headset stops the music and answers the call. Voice quality, both on my end and on the side of those who are talking to me is excellent. They have said they can't tell I'm talking on a cell phone at all. The mic is built into one of the earcups and is not visible externally. It works though.
The user replacable battery has a very long life. I have used the headphone for several days without it needing to be recharged. Recharging can be done through a USB port in a computer or through the included wall plug. You can also buy an extra battery from Sennheiser and swap out a depleted one for a freshly charged one if you will not have access to a charger for an extended period. The battery is rechargable outside of the headphone as well as while installed in the headphone.
For occasions when you prefer to use a corded headphone, the sennheiser comes with a cable that allows you to do that, deactivating the bluetooth system. For example, on an airplane when you can't use wireless devices, place your iphone in the airplane mode and use the wired headphone connection. That turns off the cell phone and blue tooth capabilities of the iphone and allows you to use it strictly as an ipod for audio and video.
The MM-400 can synch with and remember up to 5 different devices. Once you have made the initial synch, just turning each device on within range will link them.
Included in the box is a nice zippered travel pouch for carrying the headphone plus it's charger/cables. The headphones fold compactly for travel and are robustly constructed with lots of metal construction that has a quality feel to it. That bodes well for long lasting durability.
31 of 31 people found the following review helpful
These are better than I expected. They sound very good, much like the PX-200 II headphones that I bought and tried out. I didnt like the stupid king size volume knob on the 200's so I upgraded. (was sennheiser counting on that ?!? HA!) The construction of the headphones looks very good, It looks like they may withstand some constant use. I guess we'll find out later. The sound is very even across the frequency spectrum; dont expect harsh highs or deep pumping bass. I am usually a bass head, so I have to adjust the EQ. The headphones can handle plenty of bass boost without distorting. Bass therefor is acceptable to me, given that the rest sounds great and detailed.
The headphones fold up nicely and have a soft case included, which I didnt like at first. But when I saw the size of the hard case that came with my brother's bose headphones, I decided that the soft one has its benefits too (like not being too thick). Comfort is OK. I fell in love with the comfort of the over-ear headphones, and these end up being a tad tight. Even the bose ON-ear has a type of memory foam that hugs the ear. The mm 400's are not that cushy, but you get used to it.
Pairing was a little akward, but for some reason I always have a problem with bluetooth: detect, pair, connect, double connect etc. argh. I tried the bluetooth Jabra Halo headphones and pairing was soooooo easy. I would have kept those, but the lowest volume setting is louder than I normally listen to. The senn's have this little bluetooth button on the bottom that has some other purpose besides the center button; so be sure to read the manual for that one.
Listening in the apple store sold me, but there were also a few surprises. The battery can be removed and recharged outside of the headphones. You can buy a backup just in case. Also, the charger is just a plain old USB charger, so I can use the incredibly small charger that comes with the iphone (plus the micro USB cable, of course.) in addition, the included charger comes with attachments to use all over the world, so this one comes with me to europe, and I can use it to charge the iphone. :)
One small thing. The first time I used the headphones was with my mac (snow leopard) and the sound was horrific. It was obviously compressed and I blamed the Senn's. My heart fell and my throat closed. BUT... no problem. A quick search later and I found out that the mac was to blame. The simple fix involves a terminal command found on the next line:
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 50
These are the values you can use at the end and what they mean:
30 - Low audio quality
40 - Medium audio quality
48 - High audio quality
58 - Excellent audio quality
PS I bought these refurbished. Work great and... HALF the price. Cant beat that!
The headphones fold up nicely and have a soft case included, which I didnt like at first. But when I saw the size of the hard case that came with my brother's bose headphones, I decided that the soft one has its benefits too (like not being too thick). Comfort is OK. I fell in love with the comfort of the over-ear headphones, and these end up being a tad tight. Even the bose ON-ear has a type of memory foam that hugs the ear. The mm 400's are not that cushy, but you get used to it.
Pairing was a little akward, but for some reason I always have a problem with bluetooth: detect, pair, connect, double connect etc. argh. I tried the bluetooth Jabra Halo headphones and pairing was soooooo easy. I would have kept those, but the lowest volume setting is louder than I normally listen to. The senn's have this little bluetooth button on the bottom that has some other purpose besides the center button; so be sure to read the manual for that one.
Listening in the apple store sold me, but there were also a few surprises. The battery can be removed and recharged outside of the headphones. You can buy a backup just in case. Also, the charger is just a plain old USB charger, so I can use the incredibly small charger that comes with the iphone (plus the micro USB cable, of course.) in addition, the included charger comes with attachments to use all over the world, so this one comes with me to europe, and I can use it to charge the iphone. :)
One small thing. The first time I used the headphones was with my mac (snow leopard) and the sound was horrific. It was obviously compressed and I blamed the Senn's. My heart fell and my throat closed. BUT... no problem. A quick search later and I found out that the mac was to blame. The simple fix involves a terminal command found on the next line:
defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 50
These are the values you can use at the end and what they mean:
30 - Low audio quality
40 - Medium audio quality
48 - High audio quality
58 - Excellent audio quality
PS I bought these refurbished. Work great and... HALF the price. Cant beat that!
16 of 18 people found the following review helpful
Amazon Verified Purchase
I had been looking for a headset with these features for quite some time:
* On-the-ear (as opposed to over the ear or in the ear)
* Telephone compatible
* Pretty good stereo audio
That's all I needed. On-the-ear so I can use it with hearing aids in place, and pretty good audio is good enough for my burnt out musician's ears ;-( I use it to listen to web radio and also take calls from my business cell phone with a push of a button.
Wireless Bluetooth wasn't my requirement, but I'm glad it's there.
Most important to me is speach intelligibility, and the quality of my voice to others. I vouch for the first, and others have confirmed the second. I've read others' reviews raving about the audio quality and I won't contradict it. The audio is better than I can appreciate.
While writing this I'm happily switching between Pandora and Live365 through my BlackBerry. Using my laptop Bluetooth I listen to Shoutcast or go directly to streaming websites. My new MM-400 handles it all.
* On-the-ear (as opposed to over the ear or in the ear)
* Telephone compatible
* Pretty good stereo audio
That's all I needed. On-the-ear so I can use it with hearing aids in place, and pretty good audio is good enough for my burnt out musician's ears ;-( I use it to listen to web radio and also take calls from my business cell phone with a push of a button.
Wireless Bluetooth wasn't my requirement, but I'm glad it's there.
Most important to me is speach intelligibility, and the quality of my voice to others. I vouch for the first, and others have confirmed the second. I've read others' reviews raving about the audio quality and I won't contradict it. The audio is better than I can appreciate.
While writing this I'm happily switching between Pandora and Live365 through my BlackBerry. Using my laptop Bluetooth I listen to Shoutcast or go directly to streaming websites. My new MM-400 handles it all.
Most Recent Customer Reviews
3.0 out of 5 stars
Good for music but not for calls
Headphone is good for listening to music but not very good for making/receiving calls. The voice quality over bluetooth is not clear and sound is very low with wire connected. Read more
Published 1 month ago by Amit K Kansal
5.0 out of 5 stars
Sennheiser MM 400
I searched far and wide for wireless Bluetooth headphones. These were the best ones that I could find. I am super pleased with the way that they work and the quality of sound. Read more
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2.0 out of 5 stars
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5.0 out of 5 stars
There Great!
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3.0 out of 5 stars
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Published 4 months ago by JH
5.0 out of 5 stars
Absolutely outstanding sound!
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Published 4 months ago by Z
4.0 out of 5 stars
Awesome headphones. Arrived the day after I ordered them.
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Published 5 months ago by Gordo
4.0 out of 5 stars
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5.0 out of 5 stars
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The product took a few extra days to arrive but once it got here ...the fun began. I work at home so I use the headphones to mute out backround noise and talk on the phone, I... Read more
Published 9 months ago by MM
