Victor’s SU-DH1 “Headphone Surround Adaptor” lets users choose between Dolby Pro Logic II or Dolby Headphone modes and connects to any mobile device with a headphone jack. Simply plug in your headphones and enjoy high-definition sound on the go. Powered by 2AA batteries and weighing only 99g, you can take the SU-DH1 anywhere. [Akihabara]