MacBook Pro making a hissing noise

Hi Lobsterlover1,

Welcome to the Apple Community.

Re: how do you stop the hissing sound on the macbook pro

Wondering if this is fan noise:

About fans and fan noise in your Apple product - Apple Support

All the best :-)

There have been many postings about the noises made by Mac Studio. Some claim bad fans, others say coil whine, others say fan noise. Apple says you have 14 days to exchange if you don't like it. There has been no definitive single answer.

This remarkable blog post suggests that its case design is like the whistling of a flute, and the solution is to tape off the sides of the grille to change the musical characteristics:

https://basicappleguy.com/basicappleblog/the-case-of-the-singing-studio