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.
Carbon Audio Zooka
61% have it
10. drivers count
A speaker driver is an individual transducer that converts electrical energy to sound waves. More drivers may result in better sound quality.
This type of device allows you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise. Ideal for plane rides and morning commutes.