PRESONUS FIRESTUDIO PROJECT - V2.0 User Manual page 22

GETTING STARTED
With the Zero Latency button and Monitor Enable both engaged, you will hear the live zero-latency input
straight from your FireStudio Project (as opposed to through software). As such, you will no longer hear the
effects of any inserts on the channel. However, you will still hear the result of any sends on the channel, as
Bus and FX Channels will still output normally.
19 | PreSonus 2009