As a veteran of a number of international moves from the U.S. to points overseas, I can commiserate with you. Since your audio gear may be subjected to less than tender treatment, you need to find a way to pack your gear so it is both immobilized in its container, and cushioned from impacts.
My suggestion is to have custom boxes built for your most valued pieces of audio gear, and then have those boxes placed inside another box and fill the space between the inner and outer box with expanding foam. This is a technique that is often used by manufacturers that ship heavy items such as kilns, and it works very well.
Some of the "mail box for hire" companies that do custom packing have the capability to work with expanding foam. Look in your local yellow pages first, and if that doesn't turn up what you want, try the Internet.
My suggestion is to have custom boxes built for your most valued pieces of audio gear, and then have those boxes placed inside another box and fill the space between the inner and outer box with expanding foam. This is a technique that is often used by manufacturers that ship heavy items such as kilns, and it works very well.
Some of the "mail box for hire" companies that do custom packing have the capability to work with expanding foam. Look in your local yellow pages first, and if that doesn't turn up what you want, try the Internet.