Speaker Edifier R1000T4 Black

Active bookshelf speaker system with 24W total power output
100% MDF wooden enclosures
4 inch bass driver and 1/2 inch silk diaphragm tweeter driver
Master volume and super bass controls on active speaker
Versatile connectors for easier cable replacement / extensions 

Total power output :RMS 12W 2 (DRC ON)
Signal to noise ratio : ?85 dBA
Amplifier distortion :0.5%
Input sensitivity : PC: 700mV ± 50mV
AUX: 550mV ± 50mV
Frequency response : 75Hz ~ 18KHz (+/-9dB)
Bass driver : 4 inch (116mm)
Treble driver : ½ inch (13mm)