The PicoPix Max has two, 4-watt built-in speakers that can play loud enough for use in an average classroom or meeting room, but they’ll struggle to compete with any significant amount of ambient noise. As with most built-in projector speakers, the sound quality is rather ‘thin’ due to the lack of any bass and the sound can become distorted if you turn the volume up too high. For comparison, I played some music on my iPhone 11 next to the projector, and the phone speakers were easily able to drown out the projector speakers.
The sound quality is fine for voice narrations or background music, but less than ideal for playback of video tracks where music is important. If higher quality audio is needed, the projector has mini-jack audio outputs that can be used to connect to an external powered speaker system and can also be connected via Bluetooth to an external speaker or to headphones.