5 Aurvana X-Fi - I`ve never heard music this good before!!FulhamH | 10/03/2008 | See all FulhamH's reviews (5)As an owner of a Creative Soundcard in my PC and having benefited from the features that the X-Fi soundcard brought to my games and movies I was keen to see if I could get the same massive improvement on my MP3 collection on my MP3 player. You might be aware that an MP3 file is a compressed file and the compression process removes some of the quality and sparkle from your music. the problem is that you get used to this reduction in quality and its only when you listen to your music through this technology do you realise what you`ve been missing!! The X-Fi technology uses something called the X-Fi Crystalizer and this restores suppressed details in recordings therefore putting back the lost quality while another gizmo called the X-Fi CMSS-3D electronically positions the sound around the listener so you feel submersed in the music or surrounded by the musicians!! The cool thing is you can switch off both of these features on the headphones and you can hear the quality drop off again proving that they are working their majic!! The units also have active noise cancellation which cuts out almost 100% of the peripheral outside noise which again detracts from your listening pleasure. The net result is that you have outstanding music quality and you don`t have to play your music as high as you did before therefore protecting your hearing and getting longer life from your MP3 player battery.The Aurvana X-Fi`s headphones use batteries to give the active noise reduction but if these batteries run out the units will continue to work as normal headphones albeit without the brilliant X-Fi & noise reduction facilities.The headphones are very comfortable to wear for prolonged periods of time and fold flat when not in use and can be stored in a neat compact storage / Travel case. You also get an aircraft adapter so you can take them on the plane and listen to your music without the horrible drone of the engines.Around the home or on the move these really are worth their weight in gold!! You might think that these are expensive, but when you get them home and try them out and experience the improvement to your music you will wish you could have brought these ages ago!!! They really are that good.