Edifier USA 2.1 Speaker System (M3200) Uniquely designed, 2.1 audio system capable of hosting multiple audio sources via 3.5mm auxiliary input, PC to PC signal input and CD to CD signal input Wooden enclosed, magnetically shielded subwoofer with 5 1/2 inch driver Elegantly designed, magnetically shielded 2-way satellites Wired rotary master volume controller with "red-halo "glowing effect, including on/off feature, headphone jack and 3.5mm auxiliary input Subwoofer / bass unit: 5 1/2 inch (140mm), Magnetically shielded, 4Midrange unit: 2 inch x 3 1/2 inch (50mm x 90mm), Magnetically shielded, 4Treble unit:  inch (20mm), PV domed, Magnetically shielded, 8 Uniquely designed, 2.1 audio system capable of hosting multiple audio sources via 3.5mm auxiliary input, PC to PC signal input and CD to CD signal input Wooden enclosed, magnetically shielded subwoofer with 51/2 inch driver Elegantly designed, magnetically shielded 2-way satellites Wired rotary master volume controller with "red-halo" effect, including on/off feature, headphone jack and 3.5mm auxiliary input