guillaume chalaron mastering

born in France from a musical background between jazz and classic

I installed myself as a guitar teacher mid 90ies and became interested in sound/tone production of instruments and speakers
I developed last decade solutions to increase emotion of digital music
positive feedback from brands at High End Audio Show in L.A, France, Poland, Germany defined this 'audiomastersystem' as a clean and organic sound expected



is a company and trademark registered in 2017

its advanced mastering chains can return digital to quality of highly mastered vinyls records quality but also revisit actual mastering with more naturalness in sound

that hybrid architecture is now approved by producers and international artists,

digital can meet analog






Great mastered vinyl records and digital files have revealed interesting differences

at several international audio shows on advanced playback systems

Aspects of integrety of sound were lost

I did work on a merging technique and a complex algorithm to restore the original sound

Listeners achieve a better musical experience

Transpose the process to current digital recordings and new sonic abilities impact again






Back To Analog Root


RM returns 'old' CD masters from last century close to the original

vinyl pressing of the analog masters,

Working on how to match 50 referent records including

45rpm, half-speed mastered vinyls, direct transfer from analog tape



Towards Master Quality

Q2 2020


Revisiting sound due to proper limitations of some vinyls

and digital formats is another goal for a more satisfying experience


Simply hear hidden aspects of music with more emotion

Improved dynamic range perception

Some quality heard on analog master tape recordings

are generated by the mastering chain



Mastering the Mix

Q1 2021


Our mastering chain is also working for original stereo mix

Results are positive after one year of research exploring some

recent works from Bernie Grundman, Tom Coyne, Tim Young,...







View affecting the musical rendering



Extended Dynamics

More Realistic, like 45s RPM records, RM can enhance the dynamic range,

reversing the effects of compression


Flexible Soundstage

A full sound is able to radiate beyond the area of the speakers

without removing the impact and focus of the center

RM can fill/empty the room and get you at an orchestral performance


Advanced Stereo Imaging

Left, center and right locations are wider and lighter

to generate more distinctive informations in the whole room

enabling a continuous and realistic spatial distribution


Sound Layers with 3D Transparency

Three dimensional enveloping sound, outstanding depth and clarity

are the most complex achievements

Digital can translate new acoustic spaces, the 'analog spirit'


Maximum Transient Fluidity

RM can improve transients and signal liquidity

through digital conversions up to DSD2048

and a technique to reduce the digital sounding aspects


'Intelligent' Balance

Human perception of frequencies/level changes is not linear

Spectrum balance and sound dynamic were elaborated

after psycho acoustic test and comparisons to live performances



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