The 500 series feature an onboard high quality MP3 player allowing to play any song from the SD card on up to 4 different connected devices. Touch buttons can be used to toggle between the different tracks and set the volume. Use one of the nexmosphere elements to switch between the different outputs and compare in an intuitive way.
> high quality audio
4x Audio switching
> facilitating speaker comparison
8x X-talk interface
> for easy sensor connection