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.
65% have it
8. has an AUX input
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.
84% have it
9. Has WiFi
The device can connect to WiFi.
45% have it
10. audio output power
Audio output power is based on the number of speakers and their power in watts. High audio output power results in loud, clear sounds.