It can get pretty loud but for better sound just connect them to a better audio device

Big sound, great picture, affordable

The sound is loud

, this mini projector is very bright and the image is really sharp, we connect the blue tooth transmitter and it really feels like a movie theater, great sound and great image, we even use it to watch youtube videos off my cellphone or tablet,I can also look at pictures directly from my camera, the colors are very bright and vivid, the carrying case is a big plus for this mini projector