no sound

hi i have just bought a Steinberg UR12 loadded in cubase ai plugged it all in ive plugged in my guitar torecord somthing but i am getting no sound
do i need speakers to plug into ur12 or should shound come through my mac speakers sorry im new to this so i dont have a clue any help would be welcomed thanks gerry

Hi and welcome,

Yes, you need a speakers or a headphones plugged to your UR12.

Even the AI version comes with a nice setup diagram in the manual, created especially for people like you, who don´t have any clue, and don´t use forum search functions.