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DFF File Format Audio | Open .dff File Extension [Players, Converters]


Audio Basis - educational articles

DFF file (.dff extension, DSDIFF) is one of DSD (1-bit audio ) file formats to audiophile music and other recordings.

Read below about features, quality issues, format comparisons, how to open DFF audio file: convert, play, edit.

What is DFF Audio File Format





Input DSF, DFF, ISO (1-bit audio) is supported in Audiophil-E, PROduce-R and configurable Modula-R
Output DSF is supported in maximal PROduce-RD and configurable Modula-R
For ISO tracks, DSF, DFF with length more 3 minutes FREE demo mute 2 second silence in the output middle





DFF format audio consists of data blocks (chunks). There are 8 standard types of chunks. [1]

Non-standard chunk may be embedded to DFF file. However, if reading application can't recognize the chunk, it is skipped.

Example: Metadata (track, album names, performer, artwork, etc.) chunk may be added to DFF. But only application, that can recognize the metadata block , will read it and display.

There is absolute start time chunk, that may be useful in professional applications.


Channel number

Channel number limited by abilities of chennel number field in the channels chunk of the format. There is applied channel mask with reserved several channel types ("Left", "Right", etc.) and there is custom reserve range for other types of channels.

Also there is separate loudspeaker configuration chunk (optional).


Audio data

DSD (uncompressed) and DST compressed sound data stored differently:

  • DSD sound data is stored as single chunk
  • DST sound data is stored as information chunk and frames (dataa and frame CRC chunks).



Quallity issues (DFF vs. DSF)


DSF vs. DFF is not complex matter. Because both formats are very similar.

DFF and DSF are binary identical as DSD data storage.

DSF allow to:

save metadata standard way (DSF audio player applications capable read it, as rule)

store 8-bit DSD samples.

Multibit samples are not so important currently. Read more about bit depth and sample rate >

Both formats allow flexible configuration for multichannel files.

Warning: some software can convert DSF to DFF or back with modifications (non-bit-perfect mode). So checking of every converting tool is recommended.




Quallity issues (DFF vs. PCM)


Sound quality of files defined as quantization-noise-management abilities of DSD modulator and quality of filtering in demodulator.

It is completely like to DSF vs. PCM.

Read more [DSF sound quality issues] >




DFF file players


  1. Audirvana (Mac)
  2. Foobar 2000 (Windows)
  3. JRiver (Mac, Windows, Linux)



DFF file converters


  1. AuI ConverteR 48x44 (Mac, Windows)
  2. Audiogate (Mac, Windows)
  3. Foobar 2000 (Windows)
  4. JRiver (Mac, Windows, Linux)
  5. dff2dsf (Mac, Windows, Linux)
  6. dsf2dff (Windows)




  1. Utility to convert DSF to DFF (Windows) dsf2dff.exe download here.
  2. Utility to convert DFF to DSF (Windows, Mac, Linux) dff2dsf download here.





Look below tutorial videos:


Watch video guide: How to convert DFF to FLAC, mp3, WAV, AIFF, other on Mac OSX, Windows



Watch video guide: How to convert DFF to DSF




Edit DFF


This format may be edited via conversion DFF to PCM, editing, conversion PCM to DFF back.

To minimize losses, PCM 32- or 64-bit float is recommended.

Multiple or non-multiple PCM sample rate is not matter to pro audio conversion software.

Target sample rate defined what minimal musical band you want to keep.

As general recommendation, you can use PCM sample rate 174.4 or 352.8 kHz.



DFF file players


  1. Audirvana
  2. Amarra
  3. JRiver



Read more about DFF
  1. DFF to FLAC Converter >
  2. DFF to DSF Conversion on Mac OSX, Windows, Linux >
  3. DFF to DSF Converter >
  4. How convert DST compressed DFF under Windows >


Read also

  1. DSD vs DSF vs DFF Files Audio >
  2. What Inside DSD Converter of Audio Files >

Read other site parts

  1. DSF File Format Audio. DSF File Extension >
  2. FLAC file format >
  3. Audio converter >
  4. DSF DFF WAV FLAC AIFF mp3 ... converter >
  5. ISO converter [1-bit audio] >
  6. CD ripper audio >
  7. Metadata editor >
  8. Tutorials >
  9. Audio Basis - educational program >


  1. DFF specification



Read other articles about audio issues

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