Codec Toolbox is an affordable yet invaluable Plug-In to encode your music for the internet. We all want our music to sound great in every format, so why not take control of the process?

The product results from a partnership with the Fraunhofer Institute, the body that was significant in creating the mp3 and AAC formats that most listen to today. Audition codecs in real time before committing to encode, ensuring your music sounds as good online as it does in the studio. 

Codec Toolbox consists of two applications: the Toolbox Plug-In for auditioning your mix, and the Toolbox Manager for encoding it and adding metadata.



  • Multiple high quality codecs including mp3, AAC and iTunes+ 
  • Batch encode multiple files to save time 
  • Clip Safe auto-compensates for overs to keep your mix clean 
  • Add metadata such as track names and artwork 
  • Decode mp3 or AAC files to WAV or AIFF 



AAX Naitve
Audio Units



Pro Tools

Pro Tools 10.3.8, 11.3.2, 12 – AAX Native
Pro Tools 8, 9, 10 – RTAS
Approved Pro Tools CPU, OS and hardware configuration: 
iLok2 USB device or single-machine iLok authorisation
Latest iLok drivers


Audio Units

Audio Units-compatible application (Logic, Digital Performer etc.)
Mac OS X 10.6.8 – 10.12
iLok2 USB device or single-machine iLok authorisation
Latest iLok drivers



VST2-compatible application (Cubase, Nuendo, Sequoia etc.)
Mac OS X 10.6.8 – 10.12
iLok2 USB device or single-machine iLok authorisation
Latest iLok drivers


Pro Tools 10.3.8 – 12 (AAX Native)Pro Tools 10.3.8 – 12 (AAX Native)
Pro Tools 8 – 10 (RTAS)Pro Tools 8 – 10 (RTAS)
Logic Pro X 10.2Nuendo
Logic 8 & 9Cubase
Digital PerformerAbleton
Studio 1Studio 1

The Sonnox Codec Toolbox is compatible with the following hardware DSP accelerator or consoles:

Pro Tools AAX DSP-
Pro Tools TDM-
Avid Venue-
Avid S3L-
Avid S6L-
Universal Audio UAD *
Sold and supported by Universal Audio Inc. (
CodecMode44.1 kHZ48 kHz
MP3CBR max/min11,400/6,32012,464/6,320
HE-AACCBR max/min6,355/6,2756,361/6,277
HE-AAC v2CBR/VBR8,1288,128
NATIVE44.1 – 48 kHz: HDX44.1 – 48 kHz:- TDM44.1 – 48 kHz:-
 88.2 – 96 kHz:-  88.2 – 96 kHz:-  88.2 – 96 kHz:-
 176.4 – 192 kHz:-  176.4 – 192 kHz:-  176.4 – 192 kHz:-


 Pro-CodecCodec Toolbox
Real-time Codec auditioning
Encode to mp3 or AAC formats
Decode to WAV or AIFF
High quality codecs from Fraunhofer
High quality iTunes+ codec from Apple
Encode audio with samples rates up to 192kHz
Encode audio only at 32, 44.1 and 48kHz
Full resolution encoding of 16, 24 and 32-bit files
16-bit resolution encoding of 16, 24 and 32-bit files
Listen to difference between input and codec output
Visual frequency feedback from FFT
Detailed NMR frequency indicator
Ability to select up to 5 codecs for simultaneous comparison
Encode to 5 different formats simultaneously
ABX Test mode
Trim levels manually
Compression ratio meters
Online / realtime encoding with a DAW
Variable quality settings
Metadata editing
Batch processing


"...a product that everyone can afford to own, and a great number of people really should own."

"Overall, it’s hard not to recommend Codec Toolbox to anyone producing music in the 21st century."

" audio software tool I didn’t know I needed in my studio until I started using it!"