monitor attivi con dock per ipod, usb, 15+15 watt, record, mix, sync and go! integrated ipod dock to sync, charge and play music usb input to stream digital audio from your computer, offering high-resolution sound 3.25-inch magnetically shielded, inverted cone, copolymer woofer 25mm silk dome high frequency driver bass reflex vented cabinet design 30 watts (2 x 15) of internal power front panel 3.5mm stereo aux input jack, headphone output jack and volume control convenient rear panel rca inputs passive crossovers utilizing multi-pole design for linear response usb and speaker cables included solid medium density fiberboard (mdf) construction