Sound Quality
The Eton rukus Xtreme delivers great, well-rounded sound. Though not as dynamic in higher ranges as some competitors, the Xtreme’s bass does not distort or drown out overall sound, even at higher volumes. Under the hood, the rukus Xtreme features digital signal processing (DSP), 2.1 internal channels, 2 full-range speakers, bass extending passive radiators, and produces an approximate frequency range of 150hz – 18khz.

Volume
The rukus Xtreme delivers great volume, registering a maximum of 94db at close range in our sound tests. We are unable to relay the Xtreme’s exact speaker wattage, however, as Eton does not publish the specifications.

Durability
The rukus Xtreme is constructed from thick, mostly rubberized high-density plastics and a metal speaker grill. The covers for the rukus Xtreme’s power and audio ports are also well designed and constructed, and seal very well. The Xtreme is IPX4 rated for water resistance, which means that it should withstand a splash of water. It can also handle a drop from about 3 feet. Though the protection offered is good, it does not compare to other competitive devices we’ve tested: in our tests, aspects of the rukus’ handle cracked under high stress or impact.

Features
Though loaded with great features, it’s the rukus Xtreme’s integrated solar panel that really sets it apart from the competition. Like many competitors, the Xtreme’s USB port can charge external devices like smartphones while music plays. But where this might easily drain the battery in a competitor’s produce, the rukus Xtreme can power through if given adequate sunlight. The rukus Xtreme also includes an integrated handle, travel adapters for global power outlets, a built-in 3.5mm (AUX) jack, andBluetooth 4.0 with AVRCP to control music from connected devices. Wireless range on the rukus Xtreme is also quite good, and meets or exceeds Bluetooth 4.0’s minimum range of 30 feet in every scenario we tested.

Power
Eton’s rukus Xtreme sports a 5200mAh rated rechargeable battery, and can deliver over 8 hours of continuous music play without using its integrated solar panel. While the battery’s mAh rating is higher than other speakers, it somehow delivers less total battery life and playing time than competitors. We suspect this is due to higher power drain from the speakers, which can sometimes be due to lesser quality components, though overall sound quality does not appear to be impacted in any way. Overall, Eton’s rukus Xtreme is a great product, and ideal for the sunny outdoors.