There´s no sound coming through the speakers
First check the Amplifier:
1. Make sure that the sound cable is connected both to the device and to the amplifier.
2. Check that you have selected the same labeled port on the front of the amplifier as the one you connected your cables to on the back. (The most common one is the AUX port.)
3. Check the volume level on the device you are playing from (Tablet, Smart Phone or Computer) and make sure you haven’t muted it.
4. Try playing the stream through the device’s internal speaker. If the internal speaker works, the issue is probably related to either the sound cable or your amplifier. Please contact the person in charge of IT in your store for further assistance.