... . this projector x1500nx has speaker built-in, so it can play movie with voice. For example, you connect ... the projector with HD player with HDMI cable, when it play movie, the voice will come along.Q: ... has AV, 3RCA, VGA and 2 HDMI inputs, it also has audio output for 3.5mm earphone.Q: ... it is led lamp, so if the electricity is stopped suddenly, the projector will not be damaged. Attractive Design ...