The normal connection should be: hdd player HDMI connected to the power amplifier, and the power amplifier HDMI connected to the projector. In this way, the power amplifier can not only play the audio signal of the hard disk source, but also transmit the video signal of the hard disk to the projector through the power amplifier, but it needs two HDMI cables.
Nut o 1 projector is very good, with high brightness, and the viewing effect is good during the day and night. Harman Kardon's bass can go down, the alto is sweet, and the voice is clear and transparent. The picture is 1080p, which is not bad at a distance of more than two meters. It is very suitable for people without TV.