I can't hear my recorded vocals


New Member
Hey guys I'm new to the forum and new to recording.

I'm wondering why I'm not able to hear my play back vocals- I have my output set to my audio interface headphones. I can record, but when I play back the vocals I can't hear anything.

If I change the output to Stereo I then can hear everything just fine when I play it back. Why is this? And will this be ok to use if it just works, or will I run into any issues later?