Sennheiser MM400-X Stereo Bluetooth On-Ear Headphones with Kindle Compatibility

Got these recently and my 1st impressions are.The GoodExcellent soundVery compactQuick chargingGood battery runtimeSpare batteries can be purchased and easy to swap over.Battery can be charged either whilst in the headphones or when removed from them.Came supplied with carry case, mains charger and other items.The BadBattery cover is a pain as stated by several other reviewers. Rubber flap on this is a definite design flaw.Cost of spare battery (£35)Overall I still think these are a 5 star item as the little rubber cover doesn't hinder your listening enjoyment and the runtime without purchasing a spare battery should be enough for most people.

I bought these because I found I was listening more and more to my Galaxy S3 while out and about and my current blu-tooth headphones  JAY World Bluetooth Stereo Headphones Headset (Small Compact & Foldable). Supports: Apple iPhone, iPad, Blackberry, HTC, Samsung S3, Samsung S2, Nokia, Motorola, LG, Samsung, Sony Ericson, PDA, Tablet PC, PC, laptop, PS3 and any Bluetooth enabled device...  which cost just over £17 became uncomfortable after about 30 minutes of use. I saw that the S3 supported the Apt-X Codec so after reading reviews, specifically the What HiFi one, I decided to go ahead and try them.Firstly the summary - They are very comfortable and well made and sound very good indeed. However at £140 ish more than my JAY World set they definitely do not justify the price difference based on sound quality alone. They cannot be folded as small as the JAY World (see my image in customer images) and apart from comfort they do not really offer any significant benefit. I have carried out the review and given it 4 stars based on this product as a stand alone item and how I would have scored it should I not have had anything to compare it against.More Detail===========Applications used for testing on both the Nexus 7 and the Galaxy S3For Streaming Playback over WiFi and 3GSpotifyGoogle Play MusicTuneIn Radio ProBubbleUPNP from my NAS over WiFiLocal PlaybackPowerampBubbleUPnP - Local FLAC filesI also tested it with BBC iPlayer, myPlayer Pro and Sky GoI also used 'Equalizer' on The Nexus 7 where the apps would support it but found just setting it at Flat gave the best response. None of the apps on the S3 would support the Equalizer settings with this headset although they worked OK with the JAY World.I tested the headphones with the same tracks on both the 7 and S3 and they included uncompressed FLAC Hi Def audio from 'Be my love' Joseph Calleja to Foreigner 4 streamed over Google Play Music.The sound quality of these headphones is very good and compares quite well to my Grado 80i's however they are not as good as my Philips Fidelio X1/00 in terms of sound stage, dynamic response, clarity or an ability to involve you and immerse you in the music. However remember these are Blu-tooth and designed for use with a mobile phone and not an amplifier so apart from general interest a comparison with the Grado's is probably more fair.There is not one type of music from Heavy Rock through Opera to orchestral works that did not perform well. Whatever type of music you listen to I am sure you will enjoy these headphones. My biggest gripe is the price because at nearly £160 (at time of writing) they are not that much better than the £17 set. Yes they are better but when you are out and about in traffic or sat in a noisy launderette (my usual place of listening) do they justify the extra price? Well I have decided to keep them based on the fact that they are better quality, especially noticeable on locally stored MP3 and FLAC files where the most improvement is noticed and most importantly for me - comfort! These are very comfortable and as I am writing this at just after 9pm I have been wearing them since just after 3pm and I can hardly notice I am wearing them. They feel light and comfortable and there is very little listening fatigue which I sometimes find listening to compressed audio files for a long period. BTW the least difference is noticed when listening to streaming internet radio which you would expect due to its relatively low bit rate.Does the new codec make any difference? The S3 has it and the Nexus 7 doesn't. I cannot tell any difference at all.Range - with the Nexus 7 I can go about 12m away with 2 walls before the signal breaks up but if I stand still it seems to stabilize. With the S3 the range is reduced to about 8m before I get breakup and with 1 wall between.Overall=======Sound Quality 8/10 (JAY World 5/10)Comfort 10/10 (Jay World 3.5/10)Range Nexus 7 9/10 Galaxy S3 7/10 (Jay World - same)Portability 6/10 (Jay World 9/10)Battery life 6 hours and still going strong (JAY World easily get 14 hours and still not flat)

My husband and son both have beats by dre headphones which are falling apart so I decided to look for a different make and was recommended sennheiser. Although the beats have a slightly superior sound quality, the build quality on these are much better. I love that they fold up and the Bluetooth feature. They have a long battery life and are easy to operate. I would definitely recommend these over the beats.

I bought these because they use the AptX codec and because Sennheiser have a good reputation. The AptX codec does offer significantly better sound over the standard A2DP codec and if you are after a pair of bluetooth cans then definitely make sure they are AptX enabled. I got these for use when I'm out and about, traveling etc. as they fold down to a very easily portable size. The construction looks solid enough and I don't think they would break easily, however I would have liked to have them supplied with a hard or a least firmly padded case instead of the soft case supplied. That said, the rubber flap which covers the charging port would not fit back into place after a couple of uses and so I had to remove it completely, not good.They come with a cable for when you cannot use the bluetooth facility such as on an airplane or when the battery runs flat. Pairing them to your computer isn't as straight forward as it should be, sometimes it takes several attempts however once paired they rarely drop the connection, especially when paired to an AptX source and the range is pretty good, its even possible to move from room to room and not drop the signal.This is all very well, but in the end of the day it all comes down to how they sound and I must say that in this area they are a little disappointing. I wouldn't put the sound quality as anything better than average and be aware that they don't go very loud, in fact they are very soft indeed. While I appreciate Sennheisers' concern for my hearing I would think that these could go a good deal louder without being a danger. For a product specifically designed for use outside the home their lack of volume is a real problem, extraneous sounds are clearly audible to an intrusive degree. Things are slightly better using the cable but that defeats the object of buying bluetooth headphones in the first place.I wouldn't recommend buying these without hearing them first.

very poor sound quality for the price - get better sound from a cheap pair of wireless earphones -

The sound quality is good and at first I had no complaints. In loud places they struggle a little but that is the cost of them being so comfortable.However, the battery doesn’t last anywhere near the advertised 10 hours. Far more seriously, after around a month, sound would completely cut out randomly. Equally randomly, the audio would ‘buffer’ for no reason giving the affect of someone spamming the play button.Currently the sound in the left ear has stopped working which is fatal.These headphones have become next to useless in 3 months which is not what I expect from such an expensive product. I imagine this is a rare issue but none the less I am very annoyed.