@MiroslavB Welcome to BassBuzz!
When you have time, join us on the Introduce Yourself! thread.
A lot of us have used the Vox AmPlug. Josh recommends using the same type of headphone/earbuds that you would use for listening to music. Although, like @Paul said, he does advise getting something with good bass response.
I usually use a pair of old Bose earbuds that I love the sound of.
If I’m studying my sound and playing with EQ settings I use a pair of Linsoul KZ ZS10 Pro in ear monitors.