2.1CH high-power amplifier use for iPod iPhone,USB/SD/Display(Optional) with CE,ROHS MT-1608B ... Wooden itower Speaker For Iphone and Ipod 1/. For iPone/iPod/PC/TV/MP3.2/. iPhone/iPod dock and Aux in Jack on top ... subwoofer on the base, 2.1CH system. 5/. Chargeable for iPod/iPhone, center control and full function control, 6/. MDF ... 330 PCS 40ft: 680PCS 40HQ: 780PCS Speaker Tower use for iPod iPhone,45W