Pioneer A3

Powerful audio for the size. Streams wireless audio via AirPlay, DLNA, HTC Connect, and Wireless Direct when there is no Wi-Fi signal. Water-resistant, portable, with rechargeable battery

Distorts on deep bass tracks at top volumes. Very slow to power up. Overly complicated controls, and set up process is not terribly intuitive

The Pioneer A3 (XW-SMA3-K) is probably the most versatile wireless streaming speaker we've seen—it's even portable, rechargeable, and water resistant—but it doesn't sound like a $400 system.