LEEDH processing for Lumin streamers


Lumin adds LEEDH processing in the case of digital volume control, this significantly improves the sound quality.

Standard processing algorithms for digitally controlling the volume often have a negative influence on the reproduction quality by amongst others round-off errors. This is why an analog volume control in an audio system is often the better choice. But thanks to LEEDH processing technology, these rounding errors are a thing of the past; there is a real ‘Lossless-digital’ volume control now.

It’sa a real audible improvement, which makes analogue volume control superfluous’, importer Look & Listen says. In short: LUMÏN-users now have the choice to LEEDH-Processing Volume Control to be used in stead of the standard processing algorithm. This feature came recently for all Lumin end users available via a (free) update.

Wat is LEEDH Processing?

LEEDH Processing is an innovation by Gilles Millot of Acoustical Beauty, a French manufacturer of high-end audio that already has several patents for its innovative designs and technologies, according to Look & Listen. A brief summary of what LEEDH Processing is all about:

  • An innovative new digital volume adjustment algorithm that eliminates rounding errors.
  • Alters the amplitude of the digital signal accurately, without any change of form and without any loss of information.
  • Uses more efficient integer volume values to maintain audio information integrity during subsequent DAC conversion.
  • Low processing power-demands, saving CPU-sources.
  • Makes a preamplifier in many systems useless.

Lossless digital volume control

Look & Listen explains it further: Some digital operations increase the number of bits needed to encode the processed signal. This number of bits can therefore exceed the limit of the DAC conversion, which requires a cut-off of some data. This truncation of data destroys indeed, some of the information in the signal The LEEDH Processing principle offers a solution and consists of minimizing the number of extra bits in order to reduce or eliminate the loss of information due to truncation’.


The LEEDH PROCESSING makes it possible to optimize the folowing digital operations: 

  • Volume control
  • Up-sampling
  • Filtering
  • File compression

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