I use several types of low voltage halogen in my listening room: ambient light, task light (near TT), and task lights illuminating various art works. No ill effects, although each and every light is on a circuit leg that is isolated from the dedicated lines for the equipment. I have a couple of the lights on dimmers, and don't have any transformer buzz either. One set is a four bulb (20 watts each ambient light. With a dimmer on it, I have noticed that the transformer heats up a little more than I would like when the lights are on low.
I also have two incandescent eyeball lights mounted on the ceiling over the loudspeakers that are on a Lutron Smart Dimmer which is wall mounted just outside my listening room. I have not noticed any induced hum when they are on, but I tend not to run them when listening to music.
I also have two incandescent eyeball lights mounted on the ceiling over the loudspeakers that are on a Lutron Smart Dimmer which is wall mounted just outside my listening room. I have not noticed any induced hum when they are on, but I tend not to run them when listening to music.