You’re not going to get the deep, rumbling bass and crisp highs of a high-end audio system in any portable speaker, but you don’t have to settle for the flat-out awful sound of many tiny speakers on the market. The Harman Kardon Esquire Mini is a sophisticated little speaker that packs a punch. The wireless Bluetooth speaker takes advantage of its dual, high-performance drivers and enhanced bass port design to deliver surprisingly big audio. And unlike other Bluetooth speakers on the market, the Esquire Mini looks professional enough to use for conference calls and around the office. Slip it in your work bag or backpack and use the kickstand to set it up when you’re ready to listen to music or make a call.