Here's what's important to understand:
* All of the Harry Potter audiobooks narrated by Stephen Fry are unabridged. This means they contain the entire text of the books, without any cuts or omissions.
* There are no separate "adult" editions. The Harry Potter books are intended for a wide audience, including adults, and the audiobooks are marketed as such.
* Some online retailers may use the term "adult" to indicate that the audiobook is not intended for younger children. This is simply a labeling convention and does not reflect any difference in the content of the audiobook.
Therefore, when you see a Harry Potter audiobook narrated by Stephen Fry, it will be unabridged and suitable for all ages, including adults.