can beats studio. work without batteries. the headphone will make bad sound without it?
The beats studio can work without batteries although they will make a lot of noise. The batteries are required for noise cancellation and to listen to music.
I'm not sure i understand your question, but if you're asking, "will my battery-powered earphones sound right if I use them without batteries", then the answer is, you won't get any sound at all. They need batteries to work.