Hdmi conncetion 5 x satellite speakers terminal for an ipod usb host 5.1-channel dual system: the th-d series offers two modes for enjoying surround sound. with the front surround mode, you can set up all the speakers on front of you, yet still experience enveloping audio via virtual l/r surround sound. since there’s no need for rear speakers, it is ideal for small rooms, or for people who want less wiring. the speakers can be mounted on walls, and are designed to bland smoothly with the display. with the 5.1-channel surround mode, you can arrange the speakers more conventionally and enjoy full surround sound. you can switch to the front surround mode by just moving the rear speakers up front. hdmi connection with 1080i/720p up-conversion connection for ipod (cable and stand included) usb host (2.0 full speed) 810w high power digital direct progressive scan output thin front/surround and wide centre speakers 16cm passive subwoofer