A:AnswerThis has an audio input but no audio output. You would need to send the audio to a different output rather than into the projector if you want to have better sound than from the included internal speaker.
A:AnswerThis projector would be great for PowerPoint presentations as long as the room size is not too large. Classroom size room is OK, larger auditorium type venue would require a better image quality.
A:Answerthe sound quality isn't too great an additional speaker system would probably be great but if planning on lounging behind the projector it will not be needed
A:AnswerThere is a line out on it. Standard headphone jack.
I use my tablet via hdmi cable for video source and Bluetooth my harmen kardin speaker to tablet. Works great
A:AnswerIt will work front, front ceiling, rear and rear ceiling projection. Go into settings and arrow to projection and enter and all that comes up. Arrow to the one you want and press enter.
A:AnswerMP4 files have to be converted to avi files. Look up on Epson's website for the specific requirements. I downloaded probably 25 apps before I found an app that converted my file correctly for it to work for the PC free feature.
