It's rare that we dole out a one out five G-rating for a gadget, but the Sennheiser MM 550-X Travel headphones are one of the sad exceptions. Find out why in the clip above from our noise-cancelling headphones group test.

Wow..... This is amazing, I gave it to a deaf person and within two minutes he started singing "shape of you"..

The MM 550 is well built, with comfortable padding and metal hinges that allow the large earcups to fold up for travel.

iPod playback; SRS WOW HD; Great Sound

Very expensive

Headphones don't come much more feature-packed than the Sennheiser MM 550 Travel, a set virtually identical to the PXC 360 BT. They offer active noise cancellation and Bluetooth wireless streaming, as well as an SRS "3D" sound mode.

Feature-packed; Comfortable

Noise cancellation ruins sound; Slightly fiddly to use; Expensive

I didn't enjoy spending this sort of money, but trust the brand so made the leap, the sound quality for Bluetooth is amazing, these are easily comparable to a wired set of cans. Anyone needing the noise cancellation function should stay well clear though as the function on these headphones simply...

Bose and Beats are all smoke and mirrors these are the real deal! they are a must have for the audiofile on the go. I've just got my Audez'e LCD-2 today, can't imagine having to listen to the mm550's, but for walking and moving around they are pretty good with bluetooth and my Atrix 4G

Great Sound; Very Compact

cannot think of any =

Can't decide if you want a wired or wireless pair of headphones , or one with active noise cancellation or without? If you've got the cash, you can have it all with the Sennheiser MM 550-X ($499.95 direct), an extremely well designed set that covers practically every situation you'd ever encounter.

Very expensive; Noise cancellation performance, while solid, isn't class-leading; Audio quality takes a big hit when noise cancellation is activated

Can't decide if you want a wired or wireless pair of headphones, or one with active noise cancellation or without? If you've got the cash, you can have it all with the Sennheiser MM 550-X (£350), an extremely well designed set that covers practically every situation you'd ever encounter.

Top sound quality in wireless mode; Smartly designed controls; Very comfortable; Rugged; folding design

Very expensive; Noise cancellation affects audio quality

Some headphones are built for kicking back on the couch and melting into the music. Others are built for the road, whether it's a long flight or just cruising around the hood. Sennheiser's travel-minded MM 550 wireless Bluetooth headphones fit the latter category - they're some street-ready cans...

Slick design; Compact and foldable; Loaded with travel features for different listening environments

Nonstandard cord could be a hassle to replace; Closed design and tight grip may cause ear fatigue during long listening sessions; Steep price tag

No, I would not recommend this to a friend

Build Quality; Compact; Great Sound; Lightweight; Noiseguard; Stylish

2point5 mm jack; Poor Value; price; Uncomfortable