The device contains an RS-232 port in order for easy up gradation of the
latest software. The Harman Kardon AVR 347 Home Theater includes a
satellite radio system and supports IPOD connectivity. If you are
obsessed about good connectivity features then this is the ideal system
for you. There are three inputs for the components along with two HDMI
inputs. The device also contains 6/8 analogue inputs and preamp
outputs. If you would like to add some more amplifiers to the system
you can easily do so with this particular home theater system. The
power options are simply outstanding with this system and the sound
quality is unbeatable. The only shortcoming of this system is that
there are only 2 HDMI inputs available for use. There is no option for
decoding HD audio. But overall this is almost a flawless product
compared to the strongest contenders.