Cracking a safe by listening to it is possible, but it is certainly not the easiest or most effective method. There are a number of ways to crack a safe, and each has its own advantages and disadvantages. Listening to the sound of the tumblers as they fall into place is one way to crack a safe, but it requires a great deal of experience and skill. It is also very time-consuming, and there is always the possibility that you will not be able to hear the faintest click that indicates the correct combination. Another way to crack a safe is by using a stethoscope. This method is much faster than listening for clicks, but it requires a bit of practice to use effectively. Finally, there are various devices on the market that can be used to scan safes for their combination frequencies, which can then be decoded using special software. While this method is relatively new, it has proven to be quite effective in cracking safes.