How loud should the volume be on my device going into the transmitter?

1. If you are using a phone, iPad, iPod, or computer, start with all of the volumes (both software and hardware) all the way up.
2. Next turn the volume knob on your headphones to about 50%.  Now listen with the headphones and switch channels.  If any channel is louder/softer than another, adjust the music-player-device volumes to level the volumes across the channels.
3. You want all channels transmitting approximately the same volume so that when users switch channels on the headphones, they don’t have to adjust the volume knob.
4. If you are using a pro DJ mixer/controller, you want to be listening in the headphones while you turn it up. Have your own headphones at about 50% volume when you choose your controller volume. That way, the dancers can turn their own headphones quite a bit higher than you have yours.   Dancers need to be able to turn their own headphones up quite a bit louder than the DJ would.