I personally can't stand to listen to a male hypnotist. I'm a transgender woman, and my inner voice is female now, and I can't stand to hear a male voice in my head anymore. But, when I started my transition, I did listen to EMG files, which raises another question.
My variables, if you want to answer, are:
If you have a preference, or not?
How strong is your preference?
Are you male or female?
Are you straight, gay, or bi?
If you are transgender, answer from your gender identity, the gender you think you are, immaterial of biology.
I am a bisexual female, and I prefer a hypnotist with a female voice.