The True Bypass Box Router is used for switching an effect or a set of effects, eliminating them from the signal path when they are not required AND switching between connected instruments and amplifiers. It contains one True Bypass effects loop.
The major improvement in a WOBO True Bypass Router is the use of relays instead of switches. Most switch based bypass devices use components that are simply NOT DESIGNED for switching audio signals. The relays used in the Router Box have been specially designed for switching high-quality audio signals so that there is absolutely no impact on your sound.
The IN switch is used for connecting instruments and the OUT switch for connecting signal receivers such as amplifiers. And there is even a ground lift switch.