The New Wave of (Electricity-Free) Speakers
With sleek styling, acoustic "passive amps" are taking wireless music to the extreme.
PHI III by Science + Sons
Sound: The most powerful of the amps we tested, this gramophone-inspired model has a bandshell form that boosts the bass.
Style: Hand-cast in Toronto, it showcases your smartphone without compromising sound quality. $200; scienceandsons.com