Got my REV02 replacements. Very happy with them, no bluetooth issues so far and great sound. Sennheiser treated me extremely well. Proper way to fix mistakes and keep a loyal client base. Great product, great compay (at the danger of sounding like a an advert would :))

My Senn representative in Helsinki said that they will send me a replacement 'shortly'.I will update you when I get them. Using Bose qc20 is a torture after Senns...although ANC is better, sound is much more muddy.

@WiilB Hey! Nope, they simply said "as soon as possible". The sound quality is the best, Bose sounds worse. ANC is adequate, travelled a lot with them and was happy both on the plane, in the bus and on the train. Battery life is superb. I am in Riga, Latvia...and the closest Sennheiser warranty...

  Hi everyone. While waiting for the M2 updated version, I was using the somewhat flawed M2 Wireless; decided to wait until the new version was out before shipping the old one. On Friday, I opened the carrying case to find this occur to my M2 Wireless for no reason... The coating on the...

I have used the M2 Wireless somewhat via wired USB mode on a Windows machine with barebones Realtek sound card (cheap built-in on-the-die stuff), have not tried a MAC OSX yet. The included cable is about a foot to a foot-and-a-half (30-45 cm) or so, too short, in other words. Thus I have used...

The cable on M2 Wireless has no buttons, just a 90 degree angled 3.5 mm connector for the device and straight 2.5 input for the right ear cup on the HP.

Well, I got rid of My LG G3 as a main source in favor of GT-N915Fy (Samsung Note Edge), reset the bluetooth pairing on the headphones, and voila, all problems gone so far: no hiss, no stuttering in the office/ at home. Go figure.    Strangely so, I tested Samsung S4, S5 (Android 4.4.4) and...

I've tried my MBA mid 2013 with OSX 10.10.2 (as I understand, it does support APTX) and there is no stuttering.   However, with a mobile phone with Android, there is... LG G3 with various ROMS, Xperia Z3 with 4.4.4; about to try it with Xperia Z1C.    I also use Backbeat FIT, but they do not...

I wrote Sennheiser Nordic an email yesterday. Let's see what they say. Unfortunately, I agree that the stuttering is an engineering flaw of some kind as so many of M2 Wireless owners report having it. I'll keep you posted, if they reply at all.

Thanks for your feedback. I take it it is the Bluetooth signal strength issue or headphones driver issue. Do you hear a hiss when no music is playing at all (i.e. from ANC?

So I've used the M2 Wireless for about a week and a half now.  1) Whenever the headphones are on, there is a slight hiss in the background. I assume it's from the ANC circuitry. The hiss is noticeable even with music playing (Tested on LG G3 and MBA 2013 with 10.10.2). Anyone else noticed this...

Could you please share which device and what version of OS you use for your phone?

I use special code on my LG G3 to access BT settings, 3845#*855#. I guess it has to do with bitrate, as someone noted that iPhones do not have APTX and the intermittent signal issue still exists. Lower bitrate = no interruption, at least that seems correct to my non-engineering rule-of-the-thumb...

Just got a pair of BT M2's and joined this forum to share my experience with bluetooth headphones. I also use Plantronics FIT for gym and have no interruption issues with them. As to the BT interruption issue on M2, I have a LG G3 with lollipop/5.0. Have inttermittent music drop-out. Any...