How many receivers can I have in a system?
As many as you need, the number is endless.

Can I customize a Listen System?
Yes. All Listen Systems are completely customizable for any size group.

What's the advantage to purchasing a system as opposed to separate pieces?
Ordering a Listen System is a convenient way to ensure your order includes all the necessary components. While there is no price break for larger volumes, you can add or remove items without a price penalty.

What is the difference between the LR-400 and the LR-500 besides price?
Both receivers can tune to 57 channels, both wide and narrow band. However, the LR-400 has the buttons to make changes under the battery compartment door and the LR-400 is not programmable. If you plan to use one receiver with multiple transmitters you should use the LR-500 which is programmable to just those channels you need.