Open AA file

The most commonly used .aa file type: Audible audio

What is aa file? Understanding and opening aa files

Are you facing difficulties opening aa files on your computer, or wondering exactly what aa file is?
We've got the best software solutions for opening aa files effortlessly.

.aa file type #1: Audible audio

Files with aa file extension are in most cases audio books and other audio programs for the Audible platform by Amazon.

Further details

The aa file extension is used for a proprietary audio book format used by Audible, an Internet provider of spoken audio entertainment, information, and educational programming. The company sells digital audiobooks, radio and TV programs, and audio versions of magazines and newspapers. It is owned by Amazon.

This format comes in several versions:

  • Format 2 (Quality of AM radio sound - mono)
  • Format 3 (Quality of FM radio sound - mono)
  • Format 4 (Quality of MP3 sound - mono)

Audible audio files are often protected by DRM (Digital Rights Management).

Many current devices support AA format, with notable being Apple's iPods, Microsoft Zune, Creative Zen, Amazon Kindle and other.

MIME types:
audio/audible
audio/x-pn-audibleaudio

Open aa file with:

Audible

A media player for audible audio file format

.aa file type #2: Generic multi-volume CD image

an aa file extension is related to Generic multi-volume CD image file format rarely used by some disk images management apps.

Further details

The aa file extension is very rarely used for Generic ISO multi volume image files. ISO buster can open them.

However vast majority of .aa found are Audible audio books.

Open aa file with:

ISOBuster icon

ISOBuster

A highly specialized and easy to use CD, DVD and blu-ray data recovery tool

.aa file type #3: PAML data

An aa file extension is related to the PAML (Phylogenetic Analysis by Maximum Likelihood) software. An aa file stores some kind of data used by PAML.

Further details

The aa file extension is associated with the PAML (Phylogenetic Analysis by Maximum Likelihood) and used for some its data files.

PAML is a package of programs for phylogenetic analyses of DNA or protein sequences using maximum likelihood. It is maintained and distributed for academic use free of charge by Ziheng Yang.

However vast majority of .aa found are Audible audio books.

Open aa file with:

PAML icon

PAML

A phylogenetic DNA analysis software

.aa file type #4: Prognosis Automated Analyst document file

The AA file extension is associated with the Prognosis Automated Analyst document file format.

Further details

The AA file extension was also used by Prognosis Automated Analyst for its default document format. Most likely obsolete file format.

However vast majority of .aa found are Audible audio books.

Open aa file with:

PROGNOSIS

A performance monitoring software used in business-critical systems

.aa file type #5: Unix data

Files with aa file extension might also be found on Unix platform as some sort of system files.

Further details

The aa file extension was also reported to have been found on Unix-based operating systems, available for various computer platforms. These files supposedly contain loop fix or other syntax error data.

Open aa file with:

Unix icon

Unix

A multi-tasking operating system for various platforms

What file extension actually is?

Simply put, file extensions are the characters after the dot in the computer file name, so for example document-name.pdf has file extension „pdf“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

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