UR 22 Microphone Recording

I’ve bought recentrly a Rode NT1-A to record some vocals. First of all I have a question: is it normal to have the input’s gain higher than 50% to have good vocal’s volume? Phones’ volume is turned on 50%.
Second question: sometimes happen to hear a “beep” sound, listening to the recordings, which I didn’t hear while recording. It’s like I have recorded it eventhough I was playing a piano for example. Actually I have had the same problem months ago but it disappeared and I’ve never undestrood how.

Thank you soo much!