Guitar signal routing pedals and effects loops pedals help prevent signal loss from your electric guitar.
This gives you added control over your signal and tone to get the sound you want.
Macdaddy Music sells a variety of these effects from brands such as Lehle, Rocktron, and Electro-Harmonix.
An effects loop pedal allows you to take multiple things in and out of your signal chain completely with a foot switch. This allows you the ability for your signal to go straight to your amp or through your effects chain with a simple foot tap.
A signal routing pedal allows you to configure your signal in different ways for your specific needs. For example, you might want to play with two amps and use them simultaneously or be able to switch between the two. Or, you may want to have two guitars that are using the same into amp that you'll use separately. Many musicians who play live music like using a signal routing pedal to give maximum flexibility.
There are many other scenarios that a signal routing pedal may be beneficial - if you are unsure if it would help you, let us know! We would love to talk through your needs to see if this is the right choice for your pedalboard. Many musicians who play live music like using a signal routing pedal to give maximum flexibility.