Eton Rukus XL
There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.
A speaker driver is an individual transducer that converts electrical energy to sound waves. More drivers may result in better sound quality.
Vifa Stockholm 2.0
Meridian Explorer 2
With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.
Soundmatters FoxL DASH7
Meridian Explorer 2
2 x 11W
Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.
Devialet Silver Phantom Gold
2 x 2250W
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
An amplifier is integrated into the device. An audio amplifier takes a small signal and makes it bigger without making any other changes in it which results in better sound, so any sound source can be connected to speakers.
A passive radiator looks like a normal driver (speaker) from the front, but on the backside all of its 'guts' are removed. Passive radiators allow woofers to produce deep tones that otherwise may not have been possible. They can have the same sonic output as larger speaker cabinets, but in a much smaller size.
More microphones result in better sound quality and enable the device to filter out background noise.
Amazon Echo Show
An indicator shows you when the device has low battery.
The battery can be recharged and used over again.
The time it takes to fully charge the battery.
WOWee One Slim
Bluesound Pulse 2i
An auxiliary input allows you to play other audio sources by connecting them through a simple audio connection like a 3.5mm jack, i.e for MP3 or portable DVD/CD player.
With more USB ports, you are able to connect more devices.
Wireless devices allow users more freedom of movement.