Inside The MacWorld/iWorld 2013 Ultimate iFan Event

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Attendees listen to music with Polk Audio Inc. UltraFocus 8000... News PhotoApple Computers,California,Electronics,Finance,Headphones,Horizontal,Listening,MacWorld Expo,Moscone Center West,Music,North America,Portable Information Device,San Francisco - California,Technology,The Americas,USAPhotographer Collection: Bloomberg 2013 BloombergAttendees listen to music with Polk Audio Inc. UltraFocus 8000 headphones at the Macworld/iWorld conference at the Moscone Center West in San Francisco, California, U.S., on Thursday, Jan. 31, 2013. This year's conference, titled 'The Ultimate iFANEvent,' brings together attendees to celebrate Apple Inc. technology and learn more about products and services for Apple users. Photographer: David Paul Morris/Bloomberg via Getty Images