Things we don’t like: background noise, poor quality audio and this financial crisis. Things we do like: these cans from Genius that miraculously make all our problems disapear. These GHP-04NCs are cheap, at only US$50, but block out pesky sound too. Using technology built on the ‘superposition principle’ they digitally produce sound waves the opposite frequency of the noise around you, thereby cancelling it. The pair packs a 40mm driver unit and nice cushy leather ear pads so they should sound pretty good too. Could this be the start of wallet-friendly tech? Yes, please.