This document is the Owner's Manual for the Roland CE-300 Super Chorus effect unit. It details the front and rear panel controls, including the Effect Switch, Input Level Control, Modulation Rate and Depth knobs, and Direct Mute Switch. The manual explains how to connect the unit to instruments, mixers, and amplifiers, noting that a microphone cannot be directly connected to the input jack.
No, the CE-300 has a rated input level of -20dBm, so a microphone cannot be directly connected to the Input Jack.
If the signal exceeds the maximum input level of +12dBm, the created sound may still be distorted even if the input level is set to low.
If both input jacks on the front and rear panels are used at the same time, the one on the front panel has priority.