Logitech Z-2300
the below is the info regarding the unit ,but I have only the Subwoofer 120W with the volume control.
If you have already speaker , these can be easily connected to the output phones at the back of the subwoofer. Output power 40W/ channel


The Logitech Z-2300 Speakers work with desktop or laptop computers. This set of computer speakers is certified by THX and can be operated with a remote control. With a wired remote control, it easily lets you manage volume levels for the master volume and subwoofer, power the speakers on or off, or put them into standby mode. The subwoofer alone promotes 120 watts of power, bringing the total wattage of the Logitech Z-2300 speakers up to 200 watts. Furthermore, any room in the home can be transformed into a dance club with the included 8-inch subwoofer. In addition, a flared bass port helps to prevent distortion of these computer speakers. The SoundTouch wired remote available with this set of Logitech speakers includes a jack for headphones. Additional features of these Logitech speakers include an SNR sensitivity of 100 dB at 1 kHz, a minimum frequency response of 35 Hz, and a maximum frequency response of 20 kHz.