Zero8 Guitar Input volume really low

[patton686]

Newb question here: I plugged my guitar in the Zero8's Guitar Input, adjusted Input Trim to maximum, and whatever channel I select for the Guitar input, volume is extremely low, like I can barely hear anything, even with the gain all up.

Do I need some kind of DI-box to get proper volume? I plug the same guitar on my M-Audio 1814 and no issue, so I'm wondering if the problem comes from the Zero8's input that has issue, or if it's normal because it's made to use with a DI box or some kind of preamplification?

Thanks a lot