The GNS-MS01 from Yamaha is an active 2.1 speaker system for Yamaha Genos and Genos2. The Set consists of two satellite speakers with 20 watts each, a subwoofer with 40 watts and all the necessary connection cables. The small speakers are simply plugged into the back of the Genos(2) and connected to the "TO LEFT/RIGHT SPEAKER" outputs using the short jack cable. The subwoofer requires its own power supply and is connected to the Genos(2) with a separate audio cable. The intensity of the subwoofer can be adjusted directly on the speaker.