By Andrew Williams
15 Mar 2012
New Sennheiser MM 550-X Wireless Bluetooth Travel Headphones
Sennheiser MM 550-X Wireless Bluetooth Travel Headphones Enhanced Clarity Talk
SENNHEISER MM 550-X Travel Flagship Wireless Bluetooth Headphones MM550X
Sennheiser MM 550-X Travel Headphones
Updated: Two new entries in our comprehensive headphone round-up
It's time you heard how amazing digital audio can really sound
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