Audiophile Inventory on Facebook Audiophile Inventory on Google+ Audiophile Inventory on Twitter Audiophile Inventory on YouTube Audiophile Inventory on Instagramm Audiophile Inventory on Pinterest     

How to Open DFF File Extension [Players. Converters. Edit]


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.

DFF Features    Quality issues (DFF vs. DSF)     Quality issues (DFF vs. PCM)

DFF file players         DFF file converters      How to Edit DFF


• Input DSF, DFF, ISO (1-bit audio) is supported in Audiophil-E, PROduce-R and configurable Modula-R
• Output DSF, DFF are 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
• DVD ISO is NOT supported


How to Open DFF File Extension [Players. Converters. Edit]


DFF Features






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.

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).



Metadata (track, album names, performer, artwork, etc.) chunk may be added to DFF as non-standard chunk (data bloack). But only application, that can recognize the metadata block, will read and display it.



Quality issues (DFF versus DSF)


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

Comparison DFF and DSF

Feature DSF DFF
Audio content Binary identical to DFF Binary identical to DSF
Lossless compression no DST
Sample rate DSD64, DSD128, DSD256,... DSD64, DSD128, DSD256,...
Bit depth 1/8 1
Multichannel Yes Yes
Metadata Standard way Non-standard data block, can cause compatibility issues

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.



Quality issues (DFF versus 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.

In general, DFF and PCM is same things. But DFF use minimal bit depth (1-bit).

But the minimal bit depth cause minimal dynamic range. To expand the dynamic range noise shaping (pushing noise energy out of audible frequency band) is used.

But pushing the energy demands reserve of the total frequency band of audio signal. Thus DFF use higher sample rate.

Read details:



DFF file players


  1. Audirvana (Mac)
  2. Amarra (Mac, Windows)
  3. Foobar 2000 (Windows)
  4. 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)


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





  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.



How to Edit DFF


This format may be edited 3 steps:

  1. conversion DFF to PCM,
  2. editing,
  3. 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.

Read more about DSD editing here >



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

Copyright © Yuri Korzunov
["Audiophile Inventory" (since 2011), "AudiVentory", "Audiophile Inventory by".
Также "Audiophile Inventory by" (прежде "Audiophile Inventory") охраняемое коммерческое обозначение],
2010-2018. All Rights Reserved.

Site map      Terms and Conditions