At MWC 2012 today, Sennheiser announced two new sets of wireless headphones aimed at pleasing audiophiles by working with the new Apt-X file compression technology. The current run of Apt-X compression algorithms compress files four times faster than before, improving overall performance.
The MM 550-X and MM 450-X both feature NoiseGard 2.0 technology, which cancels 90% of background noise, and a push-to-talk external microphone called TalkThrough. Both will revert to standard Bluetooth audio quality (so, not that great), if used with a device that does not support apt-X. The 550-X is the more high-end offering, and comes with SRS WOW HD tech that enhances bass and creates a surround sound effect.
The MM 550-X and MM 450-X will both be available in March of this year. Pricing is unknown at this time.