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AuI ConverteR 48x44

Affordable Hi-End Converter Audio files
for audiophiles & music production

WAV, FLAC, AIFF, DSF, DFF, ISO, ALAC, WMA, APE, OGG, CUE, mp4, mp3, m4a,...

DSF, DFF, ISO, CUE input files - supported by Audiophil-E version and above

Output DSF files supported only for version PROduce-RD. Output DFF, ISO, CUE files don't supported.

Current version: 3.8.17 / 2014 October 11

How use audio converter

Prepare files for optimal playback with DAC
Convert files to sample rate/bit depth for playback with your DAC without resampling (if your DAC has such capability)
Offload "heavy" inline playback music conversion
Accurate algorithms of resampling demands significant computing resources for processing music "on fly". It may be critical for enought old computers.
For offload computer during playback we can accurate pre-convert files to native format for your DAC.
After it files will playback bit-to-bit with your DAC (if bit-to-bit mode allowed by your audio player and DAC)
Convert DSF, DFF files for playback on PCM DAC,
or PCM files for 1-bit DAC
Accurate prepare files to native audio format of your DAC with "heavy" exact processing
Accurate convert high resolution music for vehicle and portable HiFi
Portable and vehicle audio can support limited range audio formats (type file, sample rate, bit-depth). Even this stereo support lossy formats only.
So you want convert home music library files with minimization of quality losses. For this fit high precision AuI ConverteR 48x44

Why AuI ConverteR 48x44?

Key Features

Confidence in audio quality
AuI ConverteR 48x44 is HiEnd integrated audio file converter & CD ripper with wide range of prices from very affordable
Optimize music for DAC: "heavy" offline converting to format (1-bit/PCM, sample rate, bit-depth) non-changed by DAC (if your DAC able for it, read DAC manual) or with better sound
Convert PCM to DSF (1-bit high resolution audio) file format***
Convert input DSF and DFF files to WAV, FLAC, mp3, etc.*
Adjust volume** of output file with precision 0.1 dB
Sample rate and bit-depth conversion audio quality for all editions exactly the same most expensive AuI ConverteR 48x44 PROduce-RD used for HiEnd systems with cost more dozens thousands dollars

Audiophile Inventory's own high precision audio algorithms
alphaC - own AuI's high accurate sample rate and bit-depth conversion algorithm (up to 352/384** kHz)
alphaD - own AuI's gentle dithering algorithm
alphaS - own AuI's low distortion and noise sigma-delta modulation (DSF audio file format - 1-bit/D64/D128) algorithm***
Ease using and stability
Simple user interface easy even for novices: OPEN - select FORMAT - CONVERT
Safe, stable work
Time economy with full power of computer
Batch audio conversion with simultaneous (multi-CPU)* converting several files
Preserve metatags mp3, flac, wav, aiff, dsf*
Keep structure library during batch converting
Recreate structure of directories output files like input files (example: cd artist/cd album)
Convert multiple input format simultaneously to single output format
Adjust AuI for yourself
Flexible customization of codecs. As example, you can use favorite mp3 command line codec with user fiendly graphical interface of AuI ConverteR 48x44, adjust suitable conversion quality
Use AuI with other software
Use AuI ConverteR 48x44 as command line* conversion utility for other audio software
Compatible with latest operation systems
Support of latest versions of Windows and Mac OS X (including OS X Yosemite 10.10)
You are not alone with software
Reliable and fast technical support
* - for Audiophil-E edition and above
** - for PROduce-R edition and above
*** - for PROduce-RD edition

Press about AuI ConverteR 48x44


Roland Krammer
Crayon Audio GmbH
Republic of Austria,
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. ..."

David Roush,
The USA,
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,
The USA,
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
The Russia,
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
The Netherlands,
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
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."


about AuI ConverteR 48x44

I don’t heard before about AuI ConverteR. Why I must trust it?
You can download free version.
Functionality of FREE version has some restrictions: batch converting, as example (full comparing list of free and paid options see below).
But sound quality of FREE version is FULL. You can try it before buying.
AuI ConverteR permanently improved (new functionality and audio algorithms).
It's live project. You can see date and number latest version in page

Read opinions.
There are a lot free audio converters. Why me purchase audio converter?
You can use any free audio converter. It save your money.

But there is not ideal software:
- with full functionality,
- without bugs (errors of work),
- with actual codecs.
Sometime you need convert a lot files. But conversion it is impossible due bug of converter. It's real life, unfortunately :(

Often developers of free programs haven't time for technical support of each user (fix bugs, advices, release some suggestions and other).
You need to look for a new conversion software.

Sometime you need use several free utilities (command line also) for achieving of result.

With AuI ConverteR 48x44 you get:

1. User friendly integrated decision (CD converter + audio resolution converter + file format converter).

2. sureness in sound quality.

3. guaranteed technical support during 1 year after purchasing.

You can use your favorite command line tool with AuI ConverteR. Try link it to AuI ConverteR FREE now as showed in video.

How connect to AuI ConverteR 48x44 command line ENCODER

How connect to AuI ConverteR 48x44 command line DECODER
(in last versions DFF decoder downloaded and installed automatically)

I can choose other non free audioconverter. Why me need purchase AuI ConverteR 48x44?

AuI ConverteR 48x44 is hi-end converter audio files
        for playback converted files on HIGH DEFINITION APPARATUS

hi-end apparatus

Also it's:
1. live project permanently tuned for modern demands,
2. integrated tool for multiformat audio conversion,
3. simple in using software with user friendly interface,
4. software with reliable and competent technical support.

What warranty I get with purchased software?

Owners of purchased versions have priority and guaranted service in Standard Warranty term.
Standard Warranty term for AuI ConverteR 48x44 is 1 year after date of purchasing.

hi-end apparatus

If you find a bug, simply write to technical support. We will fix the bug as soon as possible (usually 1-5 days).

Sometime bugs appear due corrupted source audio files or other circumstances beyond our control.
If it possible we try to learn AuI ConverteR 48x44 pass troubles of corrupted input files or other. Or find other decision.

You can ask any questions about AuI ConverteR software, get advices how use it and send us any suggestions for improving the software.

About updates of new versions read here.

Can I get new updates free?

If you purchased (as example) version 3.4 — you get all minor updates 3.x.x (as example: 3.4.1, 3.4.2, 3.5, …. , 3.8.1, ...) absolutelly free.

But version 4.0 and above (major updates - changing first digit of version number) you must purchase again.
It need for support of development of new functionality.

You can save money by purchasing Extra Warranty with AuI ConverteR 48x44 ($50, and Extra Warranty discount 10% for purchasing with AuI ConverteR 48x44 Audiophil-E or PROduce-R).

Term of Extra Warranty is 1 year after date of purchasing.
You get all updates (minor and major for purchased version - Audiophil-E, PROduce-R) absolutelly free. Major update appear usually 1 time per year.


1. BUGS finded by users (in warranty term) FIXED in MINOR updates.

2. If you owner of AuI ConverteR 48x44 PROduce-R with Extra Warranty — you get ANY NEW UPDATES absolutely FREE during term of Extra Warranty.

hi-end apparatus

You can buy Extra Warranty with AuI ConverteR.
Into term of action of Extra Warranty, you can buy Extra Warranty for next year (after end of term of current Extra Warranty).

I use purchased AuI ConverteR and have suggestion for it. You will release my suggestion?

Suggestions of our users is direction of development of AuI ConverteR.

hi-end apparatus

Simply write to technical support. We discuss possibility, form and term of releasing of your suggestions.
AuI ConverteR permanently get new functions. Owners of purchased versions have priority of service.

Suggested function possible appear in one of next numbers of versions free. May be in next major versions (for details see examples)

Example 1: You purchase AuI ConverteR 48x44 Lite 3.1.
Your suggestion released in AuI ConverteR Audiophil-E or PROduce-R 3.2 (minor update — 3.x to 3.x).

In this case you must purchase AuI ConverteR 48x44 Audiophil-E or PROduce-R (pay full price).

Eхample 2: You purchase AuI ConverteR Audiophil-E 3.1.
Your suggestion released in AuI ConverteR Audiophil-E and PROduce-R 4.0 (major update — 3.x to 4.x).

In this case you must purchase new version again (pay full price).


If you owner of AuI ConverteR 48x44 PROduce-R with Extra Warranty — you get ANY NEW UPDATES absolutely FREE during term of Extra Warranty.


How convert CD audio to mp3. Read CD database (track, album name, year, ...) from Internet.

How convert ISO (1-bit HD audio) to DSF. Read metatags (track, album name, year, ...) from ISO.

Prices and Versions






1-bit / 2,8(D64) and 5,6(D128) MHz

delta sigma modulation (DSF files)
output ≤ 3 min  
Output DSF ≤ 3 min      
Lossless formats WAV, FLAC, AIF, AIFF, AIFF/sowt, m4a (ALAC), APE
Lossy formats mp3, WMA, m4a (aac), mp4 (aac), ogg, DTS, ac3
CD ripper get CD info from Internet 1 track
Input CUE + file    
Support meta tags (album and track name, artist, etc.)  
Batch processing of group of files   Multiple files in parallel
Multichannel files (more 2 channels) output ≤ 3 min
Output volume adjust      
Input / output sample rates 352, 384 kHz    
Input / output sample rates 22, 44, 48, 88, 96, 176, 192 kHz
Bit-depth samples of input files: 16, 24, 32, 64 integer and 32, 64 floating point
Bit-depth samples of output files:  
        16 and 24 bit
        32 bit     
        32 bit (floating point)
        64 bit and 64 bit (floating point)      
alphaC sample rate and bit-depth conversion algorithm
alphaD dithering algorithm
Audio processing 64-bit floating point
External format converters of files (download codec by demand, user can add own extensions) 9 only 9 only
Support extensible WAV-file's formats (sampler's notes, BWF - Broadcast Wave Format etc.)      
Support WAV 64-bit (RF64) format (size more 2 gigabyte)  
Search files by sample rate, bit-depth, format    
No pre-ringing (minimum phase filter)  
Launch via command Line    
Possible start more one instance of application simultaneously    
Additional skins, editing and creating custom skins  
Count skins   10 10 10
Commercial using  
Extra Warranty $50    

All prices without VAT


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Write your questions, suggestions and other here anytime, please.

We processing and answer your posts during 5:00 ... 20:00 GMT everyday.

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