I use aftershokz headset (also use them for running). They sit on the outside of your ears and deliver the sound through your cheekbones, so you can always hear outside noises and put ear protection if needed. They are blue tooth connected.
If not, I just have my phone going.
In my 1st. shop back in the 60's I had an old Heath Kit FM receiver and a make do amp. Now I have a small cheap Sony receiver that's Bluetooth equipped. I also have a 5 disc CD player, but now I use my tablet to stream Pandora. I have a pair of JBL studio monitors for speakers. These are hand me downs from my son's old studio.