Watch and share: Free audio converter for Mac, Windows

Are you:

music producer or audio engineer?

stream service owner or distributor of musical recordings?

music lover?

Do you care deeply about sound quality?

If so, AuI ConverteR is pro-audio software that designed for you.

Issues that you can solve with AuI ConverteR

AuI ConverteR 48x44 is used to optimize audio file format offline for:

Playback on:
- audiophile portable digital audio players,
- media servers,
- computer audio,
- hi-end car audio,
- mobile phones,
- other audiophile devices and software;
Music production to:
- file including into DAW project,
- music stuff preparation for further authoring in other software,
- studio release preparation for distribution (download stores, radio, TV, soundtracks, etc.),
- unify accurately file format and resolution for streaming services.

If you're proud of your

recording studio,

downloading store,

streaming service,

audiophile music collection,

try for free AuI ConverteR right now:

DOWNLOAD FREE
for WINDOWS

DOWNLOAD FREE
for MAC OSX

Professional sound quality

Sound quality is primary goal of AuI ConverteR.

It mean minimization of distortions for audio file conversion:

resampling of DSF, DFF, FLAC, WAV, AIFF and other files;
bit depth altering with and without dither;
loudness boost of DSF, DFF and other files;
other audio processings.

Read how sound quality may be improved >

It's multi tool to tune your music library

AuI ConverteR is audio multi tool.

Read about the multifunctionality:

Offline pre-conversion advantages

Offline pre-conversion advantages for music devices

Offline pre-conversion advantages for mobile devices

Offline pre-conversion allow to save electrical energy and nature.

If audio resolution is changed during playback (inline conversion), this process consume computing power and electrical energy. "Heavy" resolution conversion algorithms consume more computing resources and electrical energy. Also additional energy for cooling is need.
Offline pre-conversion is performed once. During playback no changing resolution and consuming electrical energy for it.

Try for free full sound quality of AuI ConverteR right now:

DOWNLOAD FREE
for WINDOWS

DOWNLOAD FREE
for MAC OSX

Minimize budget with flexible price policy

To minimize budget we apply flexible price policy >

There are integrated editions with fixed functionality: FREE, PROduce-RD.

Configurable Modula-R edition allow to gather your configuration from modules. Each module provide element of functionality.

Integrated editions have lesser price than Modula-R module kit with similar functionality

Modula-R allow to order part of functionality (module or several modules) from maximal integrated edition but for lower total price of assembled module kit.

Example: To convert PCM to DSF/DFF, you can order [output D64/128] and [Base (core)] modules instead maximal PROduce-RD. You can order next modules later.
But PROduce-RD has lower cost than full module kit of Modula-R.

Check typical Modula-R configurations >

There is automated configurator: select necessary functionality and order >

If you forgot to order a module(s) or want to expand functionality: order module(s) later.

WARNING: Modula-R's modules are not compatible with integrated editions (including FREE).

Try for free full sound quality of AuI ConverteR right now:

DOWNLOAD FREE
for WINDOWS

DOWNLOAD FREE
for MAC OSX

Read what our customers saying about AuI ConverteR >

Read below about:

AuI ConverteR key features
How to use AuI ConverteR to solving your tasks
AuI ConverteR advantages

Read articles about:

DSD converter quality issues here >
How to try to improve sound quality via altering resolution audio files here >
DFF to FLAC converter >
DFF to DSF converter >
DSF to FLAC converter >
DSF to WAV converter >
ISO to FLAC converter >
ISO to DSF converter >

Key features

With the audio converter you have:

low noise level and distortions of conversion,
audio optimizing,
easy graphical user interface,
fast and friendly technical support.

Read How to choose best audio format >

1-bit audio file formats are supported

DSF

D64, 128, 256, 512, 1024

DFF

up to D1024

ISO

1-bit audio (aka SACD ISO), input only

WARNING:

DVD ISO isn't supported
INPUT DSF, DFF, ISO are supported in
Audiophil-E and configurable Modula-R,
OUTPUT DSF, DFF are supported in
maximal PROduce-RD and configurable Modula-R

PCM formats are supported

WAV

up to 768 kHz / 64 bit

FLAC

up to 384 kHz / 32 bit

AIFF

up to 768 kHz / 32 bit

ALAC

up to 192 kHz / 24 bit

mp3

44, 48 kHz / 16 bit

APE, OGG, WMA, m4a and more

CUE file splitter

CUE

+ DSF/DFF/FLAC/APE/...

» Audiophile safe CD audio ripper (stereo)

safe (careful) reading audio data from CD with deep error control,
recovery-damaged-audio-data attempt,
autonomous multi-reading analysis of errors with byte precision without external database of checksums,
auto text metadata search in free Internet database and embedding it to ripped files,
assigning album artwork for ripped files before ripping (drag-n-drop or from file).
Visual CD Rip Error Display, including of displaying of error loaction at track time line.

Read How to rip CD audio [quick guide] >

» stereo and multichannel
(for mp3 and several other formats stereo only)

» downmix 5.1 to stereo

» Metadata editor DSF, FLAC, WAV, AIFF
(performer, album, track names, artworks, other)

export metadata from original to converted file,
metadata editor,
embedding of a picture from folder with source files to output files,
assigning album artwork for output files.

Configure AuI ConverteR now >

DOWNLOAD FREE
for WINDOWS

DOWNLOAD FREE
for MAC OSX

Drawings on this page do not correspond to real physical values and are used just to explain.
You should use AuI ConverteR for legitimate purposes only. Read more...

    AuI ConverteR have buit in formats: WAV, AIFF, AIF, FLAC, DSF, CUE, CD.
    All other audio format codecs are free independent command line utilities
    provided by third parties and not included into AuI ConverteR.
    CDA supported under Windows only.

Roland Krammer
Managing Director at
Crayon Audio GmbH
Republic of Austria,
uses
AuI ConverteR 48x44
since 2012

...we use AuI ConverteR 48x44 software, so that we can provide right examples...

...The dither generated music data that sounded more fine then the original...

"We do develop and built high end HiFi devices like integrated amplifier, power amplifier, phono preamplifier, pre amplfier, cd-player and audio streamer. We attach particular importance to maximum spatial resolution, but avoid the typical harshness sound in semiconductor amplifiers and digital equipment. ...

Since our CD player can play FLAC encoded files up to 96KS, we use AuI ConverteR 48x44 software, so that we can provide right examples. ..."

"...After many attempts to get my music data in the correct format, I discovered the positive characteristics of the dither function of AuI. I converted different music samples with dither. Burned the data with and without dither on CD and show this also to my colleagues in my branch. There was not one among them who could say something different as I'm. The original and the with the dither function converted samples sounded different.

The dither generated music data that sounded more fine then the original. The attacks in side instruments had more dynamic. The space was more clear. A decaying sound was to be heard longer, right down to the quietest passages. The whole sound had gained. But frequency analyzes indicated no difference, although you can hear differences. ..."

Theo G. Köhler
owner RecordingMediA
Netherlands,
uses
AuI ConverteR 48x44
since 2016

...The samples were given to three different people all well known in the music industry; 2 music directors (Choir and Orchestra) and 1 sound engineer.
Their comments were very enthusiastic and confirmed what I was hoping for; the software you have developed is an excellent peace of work and a very useful tool for the professional audio industry and outperforming other professional programs...

"During the last days we have performed listening tests on audio samples re-sampled with your R48x44 software.
First we took an original D.. file 5.2 MHz/1bit and resampled them to 1) PCM 192KHz/24 bit and 2) 44.1KHz/16 bit.
The second tests was an original Aiff 192KHz/24 bit file and resampled to D.. 5.2MHz/1 bit.
The last test was an original Aiff 192KHz/24 bit file and resampled to D.. 5.2 MHz/1 bit and then resampled back to 192KHz/24 bit file.
The samples were given to three different people all well known in the music industry; 2 music directors (Choir and Orchestra) and 1 sound engineer.
Their comments were very enthusiastic and confirmed what I was hoping for; the software you have developed is an excellent peace of work and a very useful tool for the professional audio industry and outperforming other professional programs..."

Ross Chatwin,
Commonwealth of Australia,
uses
AuI ConverteR 48x44
since 2015

...I would recommend this software to anyone from a casual audio enthusiast seeking to upgrade the sound of their audio experience right through to the professional seeking industry standard seamless conversions....

"Audiophile Inventory Converter is the quintessential format conversion tool. It has an easy user friendly interface and is deadly accurate even when converting MP3 samples from a 96 thousand bits per second to D.. samples at 45.158400 million bits per second. It covers the whole gamut of audio sample types and rates and blows most of the competition out of the water with it depth of user configurations over and above the default settings. I would recommend this software to anyone from a casual audio enthusiast seeking to upgrade the sound of their audio experience right through to the professional seeking industry standard seamless conversions. Backup and support is efficient and punctual and adds to the functionality and ease of use. I have been using AUI for several years now and each upgrade just makes it more efficient as well as adding new and diverse additions to its processing technology. I highly recommend this software."

Steve Freedman,
USA,
uses
AuI ConverteR 48x44
since 2014

I just upsampled Little Feat, "Waiting for Colombus," 1978 MSFL to 384 and all I can say is, WOW!!!...

"I just upsampled Little Feat, "Waiting for Colombus," 1978 MSFL to 384 and all I can say is, WOW!!! Such a wonderful product you make... and on my droid it sounds great as well.. Thanks Yuri! Audiophile Inventory rocks!!!!!"

Martin Klaiss,
Germany,
uses
AuI ConverteR 48x44
since 2015

The cd ripper works perfect...the music played without any dropouts...

"The cd ripper works perfect, yesterday i ripped a old cd that with other cd ripping software could not correct ripped, but by your software its perfect the music played without any dropouts."

Simon Pang,
Music lover
from Hong Kong,
uses
AuI ConverteR 48x44
since 2015

...Finally, I have chosen AuI ConverteR, simply because I find the sound quality of the files converted by it is better than the other softwares that I have tried...

"When I searched on the web to find software for converting my collections of DSF files to WAV or FLAC files to fit for my equipment setup, I found AUI ConverteR and some other softwares.

Before deciding to go for which one, I had compared the sound quality of the WAV files converted by these softwares. Finally, I have chosen AuI ConverteR, simply because I find the sound quality of the files converted by it is better than the other softwares that I have tried. In addition, it is also a nice experience to feedback my suggestions to the AUI developer for improvement and fixing issues. He always responds friendly and quickly.

I hope to continue to use it happily for my various conversion projects."

David Roush,
USA,
uses
AuI ConverteR 48x44
since 2014

...AuI was one of the few converters that had the options I wanted, especially 32 bit...

"I have spent a lot of money building a stereo system including a water-cooled media server. I have several thousand CDs that I am ripping. There is a big difference in sound quality between lossless uncompressed files (WAV) and lossless compressed files (WMA). I started with WMA due to the difference in file size compared to WAV. In the past, data storage was not inexpensive and 2 TB discs were the maximukm size you could buy. Now storage is getting cheaper and 4TB hard drives are becoming common. Now I am looking into converting the files to WAV.

It is becoming apparent that 32 bit is the way of the future, so no sense in buying software that does not handle 32 bit (same with a DAC). The AuI was one of the few converters that had the options I wanted, especially 32 bit.

About communication with Audiophile Inventory's team: Excellent and immediate responses."

Emil Serafino,
USA,
uses
AuI ConverteR 48x44
since 2014

...So I find myself using Aul ConverteR all the time for multiple audio needs...

"Infact I stumbled across your software while looking for a DSF to PCM converter for Windows before the RD version ever came out. I could only find Open Source Linux and Mac Software, one without a GUI and another with a very suspect one.
Best part about it is, IMO it is a superior sample rate and format converter than using my wave editor... So I find myself using Aul ConverteR all the time for multiple audio needs.
AuI ConverteR is an invaluable tool for converting my ... (1-bit HD audio disks [AuI's remark]) to lossless PCM WAV/AIFF or FLAC format so they can be interpreted by my non ... (1-bit HD audio [AuI's remark]) compatible ... 24/192 portable DAC and ... Headphone Amp for enjoying audiophile grade sound on the go."

Andrew Kruchinov,
music lover
Russia,
uses
AuI ConverteR 48x44
since 2013

...In previous versions there were "bugs" that the program developer fix fairly quickly...

"I'm experienced music lover. Thus I prefer possible most qualitative of available formats.
   With the variety of free and paid converters for hi-res lossless files, high qualitive ones is unitary.

    I use AuI ConverteR 48x44 almost a year. In previous versions there were "bugs" that the program developer fix fairly quickly. What does the author's desire to constantly improve the software.
    All statements on the official website and the features of the software corresponds to the actual results obtained.

    Currently AuI ConverteR 48x44 is a priority program for converting of files. Especially for high-resolution audio.

    From my own experience I recommend use the software for all music lovers and interested professionals."

Hans Daudey
Netherlands,
uses
AuI ConverteR 48x44 pro
since 2011

...With a few mouse clicks I convert a directory map of flacs to a submap with converted files...

"I use the AuI ConverteR 48x44 pro for the conversion of 192 khz / 24 bits flac files from ... to 96kHz / 24 bits flacs which are required for my ... (audio card [AuI's remark]). I use the default settings. With a few mouse clicks I convert a directory map of flacs to a submap with converted files. "

Sergey Bobrov
Russia,
uses
AuI ConverteR 48x44
since 2013

...Audiophile Inventory willingly and promptly responds to requests about found shortcomings...

"AuI ConverteR 48x44 software is a unique tool. I like its quality of audio processing more than many well-known professional software products.

Audiophile Inventory willingly and promptly responds to requests about found shortcomings. Very quickly and efficiently fix it in newer versions."

Germaine Ranglin
Jamaica,
uses
AuI ConverteR 48x44
since 2016

...I have been getting more clients far and wide because their ears are reacting to audio that is way above the competition...

"I was always on the hunt for a converter that could do exactly what I wanted and give me the clarity and prestige audio reproduction even at a lower quality...my search brought me to Aul Converter 48x44.It's awesome and very easy to use;I have been getting more clients far and wide because their ears are reacting to audio that is way above the competition...coupled with that,going Pro was my only choice,thanks again Yuri."

FREE	PROduce-RD (maximal) $249.8*	Modula-R (configure and save budget) from $18.7**
DOWNLOAD FREE for WINDOWS DOWNLOAD FREE for MAC OS	ORDER NOW for WINDOWS ORDER NOW for MAC OS	CONFIGURE ORDER for WINDOWS CONFIGURE ORDER for MAC OS
		Modula-R's modules are NOT compatible with other editions (including FREE). All Modula-R modules together are identical to maximal PROduce-RD (see configuration prices below). PROduce-RD edition have lower price than full functionality purchased as Modula-R. Expand Modula-R abilities: order modules. Configure options and buy > Ask for advice and configuration > MINIMAL CONFIGURATIONS: Order PCM to PCM $25.9* WIN MAC Order ISO to PCM $77.7* WIN MAC Order ISO to DSF $22.3* WIN MAC Order DSF, DFF to PCM $55.4* WIN MAC Order PCM to DSF/DFF $69.4* WIN MAC Order DFF/DSF to DSF/DFF $98.9* WIN MAC Order Safe CD Ripper $18.7* WIN MAC Order Metadata Editor $22.1* WIN MAC Configure and ORDER NOW >








Free	PROduce-RD

Functionality	FREE DOWNLOAD FREE for WINDOWS DOWNLOAD FREE for MAC OS	PROduce-RD $249.8* ORDER NOW for WINDOWS ORDER NOW for MAC OS
Output DSF/DFF D64/128/256/512/1024	2 sec silence in middle file ≥ 3 min
Input DSF, DFF, ISO	2 sec silence in middle file ≥ 3 min D64/128/256/512/1024	1-bit 2.8(D64) ... 45.2(D1024) MHz
True Gapless Conversion (seamless album conversion)	2 sec silence in middle file ≥ 3 min
FLAC/AIFF 32 bit
Lossless formats WAV, FLAC, AIF, AIFF, AIFF/sowt, m4a (ALAC), APE
Lossy formats mp3, WMA, m4a, mp4, ogg and more
CD ripper with deep error control, recovering attempt of damaged data	1 track
CD ripper with displaying errors at track timeline	1 track
CD риппер получает информацию об альбоме на CD из бесплатной интернет-базы данных
Input CUE + file
Support meta tags (album and track name, artist, etc.)		Редактор метаданных DSF, FLAC, WAV, AIFF
Batch processing of group of files	2 sec silence in middle output file: - from 2nd file for PCM to PCM, - from 1st file for all other	Multiple files in parallel
Multichannel files (more 2 channels)	output ≤ 3 min
Downmix 5.1 to stereo
Auto peak level maximazing for album (relative level differences between tracks are kept)
Manual output volume adjust
Inverting phase audio
Sample rates 352, 384 kHz	WAV, AIFF, FLAC,...	WAV, AIFF, FLAC,...
Sample rates 705, 768 kHz	WAV, AIFF	WAV, AIFF
Sample rates 22, 44, 48, 88, 96, 176, 192 kHz
Bit depth of input files: 16, 24, 32 (wav), 64 integer and 32, 64 float point
Bit depth of output files:
16 and 24 bit
32 bit (wav)
32 bit (float point)
64 bit and 64 bit (float point)
*alphaC* resampling and bit-depth conversion algorithm by Audiophile Inventory
*alphaD* dithering algorithm by Audiophile Inventory
Audio processing 64-bit float point (double precision)
External audio format converters of files (download codec by demand, user can add AuI ConverteR compatible codec)	9 only
Extensible WAV format (sampler notes, BWF - Broadcast Wave Format)
WAV 64-bit (RF64) format (size more 2 gigabyte)
Search files by sample rate, bit depth, format
No pre-ringing distortions (minimum phase resampling filter)
Launch via command line
Possible start more one instance of application simultaneously
Additional skins, editing and creating custom skins (amount)		10
Commercial using
*Extra Warranty*

AFFORDABLE STUDIO HD AUDIO CONVERTER SOFTWARE

Are you:

Issues that you can solve with AuI ConverteR

Professional sound quality

It's multi tool to tune your music library

Offline pre-conversion advantages

Minimize budget with flexible price policy

Key features

HOW TO USE

ADVANTAGES

WARRANTY

COMPARE EDITIONS AND ORDER

Detailed comparison

CONFIGURABLE PRICE

Ready to use Modula-R configurations:

Minimal configuration WAV, FLAC, AIFF, ALAC (up to 24 bit / 192 kHz), mp3
audio file converter (PCM formats) [Modula-R edition]

Minimal configuration ISO to DSF (D64)
audio file converter (without audio processing) [Modula-R edition]

Minimal configuration ISO to PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...)
audio file converter [Modula-R edition]

Minimal configuration
DSF / DFF (up to D128) to PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...)
audio file converter [Modula-R edition]

Minimal configuration
PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...) to DSF / DFF (up to D128)
audio file converter [Modula-R edition]

Minimal configuration DSF / DFF (up to D128) to DSF / DFF (up to D128)
audio file converter [Modula-R edition]

OPINIONS

CONTACT

USEFUL INFORMATION

READ MORE

AFFORDABLE STUDIO HD AUDIO CONVERTER SOFTWARE

Are you:

Issues that you can solve with AuI ConverteR

Professional sound quality

It's multi tool to tune your music library

Offline pre-conversion advantages

Minimize budget with flexible price policy

Key features

HOW TO USE

ADVANTAGES

WARRANTY

COMPARE EDITIONS AND ORDER

Detailed comparison

CONFIGURABLE PRICE

Ready to use Modula-R configurations:

Minimal configuration WAV, FLAC, AIFF, ALAC (up to 24 bit / 192 kHz), mp3audio file converter (PCM formats) [Modula-R edition]

Minimal configuration ISO to DSF (D64)audio file converter (without audio processing) [Modula-R edition]

Minimal configuration ISO to PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...)audio file converter [Modula-R edition]

Minimal configurationDSF / DFF (up to D128) to PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...)audio file converter [Modula-R edition]

Minimal configurationPCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...) to DSF / DFF (up to D128)audio file converter [Modula-R edition]

Minimal configuration DSF / DFF (up to D128) to DSF / DFF (up to D128)audio file converter [Modula-R edition]

OPINIONS

CONTACT

USEFUL INFORMATION

READ MORE

Minimal configuration WAV, FLAC, AIFF, ALAC (up to 24 bit / 192 kHz), mp3
audio file converter (PCM formats) [Modula-R edition]

Minimal configuration ISO to DSF (D64)
audio file converter (without audio processing) [Modula-R edition]

Minimal configuration ISO to PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...)
audio file converter [Modula-R edition]

Minimal configuration
DSF / DFF (up to D128) to PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...)
audio file converter [Modula-R edition]

Minimal configuration
PCM (WAV, FLAC, AIFF (up to 24 bit / 192 kHz), mp3, m4a,...) to DSF / DFF (up to D128)
audio file converter [Modula-R edition]

Minimal configuration DSF / DFF (up to D128) to DSF / DFF (up to D128)
audio file converter [Modula-R edition]