T-Rex REPLICA User Manual page 4

INS AND OUTS
Replica's input and output jacks offer lots of setup options and are
designed to protect the integrity of your sound. Even when your delay is
switched off, true hardwire bypass makes sure your signal stays pure all
the way to the amp.
Besides the standard input and output jacks on your Replica, the pedal
features a DIRECT output and a MIDI jack.
The DIRECT output lets you send a clean signal (with no echo) to a tuner,
or even to another amplifier for cool stereo effects. The MIDI jack (input
only) lets you control your delay's tempo (MIDI CTL no. 20) and on/off
(MIDI CTL no. 21) via an external midi controller.
Your Replica can be used in an effects loop, but note that input signals
above 2 dBu can cause distortion.