Some portable speakers can be a bit rugged despite the travel-friendly size, so the next best thing in ultra-portable amplifiers is the Geneva Sound Model XS.
For a product advertised as portable, I'd say the Geneva Sound Model XS fits the description accurately. It's not rugged, and it's practically the size of a sunglasses case when closed. The design draws inspiration from vintage travel clocks and utilizes a clamshell look that flips open and pops out the speaker. Geneva also guarantees that the Model XS is the first portable audio system that delivers Hi-Fi sound on its 2.1 speaker, which is an added bonus for those looking for more than just portability. In addition to being a speaker, it also pulls double duty as an alarm clock and a FM radio.