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Daniel O'Connell PRO

Audio Enginner
Boulder County, Colorado, US

Meet Daniel


Acoustic guitar

Electric Guitar


Daniel O’Connell obtained a bachelor degree in Sound at Cetear, Rosario, and continued his studies at SAE Institute, Barcelona and ​​London School of Sound, UK. Additionally, he has attended several workshops around the world, given by famous sound engineers, such as Geoff Emerick or Daniel Ovie.

As director and recording engineer at “312 Estudio”, he participated in more than 300 productions alongside renowned artists, DJs, producers and bands.

After ten years as director and audio engineer at “312 Estudio”, he continued his artistic and profesional journey with music devoting his career to audio mastering. His goal is to connect the artist with the audience, getting the clearest and most exciting sound possible for music.

At O’Connell Mastering we can contribute our technical capacity but mainly our creative vision so that your music sounds professional but at the same time different and authentic.

Our mastering studio approach combines analog equipment with the use of modern digital technology.

What to expect

The classes are geared toward musicians, djs, and producers who want to improve, explore, and expand their production, mixing, and mastering skills with hands-on demonstrations and examples of real-world productions. We also propose that for the classes you bring your own projects, multitrack sessions and mixes.

Some of the topics we will see are:
~ How a professional mixing engineer approaches each project.
~ Mix template and workflow.
~ Modern mixing techniques, subgroups, stems, analog sum, parallel processing.
~ Tools and techniques to achieve goals using harmonic distortion, phase tricks, etc.
~ Listen critically.
~ Ear training exercises.
~ Session Analysis.
~ Before and after the Mastering.
~ What is Mastering doing that you cannot do.
~ Mastering practice session.

Level Taught





Sound technician - C.E.T.E.A.R.

Advance Mixing and Mastering - London School Of Sound

Advanced electronic music production - SAE Institute Barcelona

Master Class Geoff Emerick - El Pie Recording

Master Class “El sonido del trabajo en equipo” - Daniel Ovie Mastering


Winner Of Rototom Sunsplash Contest with

Rock Album of the year - Awards Rosario Edita

Mastered albums around the world


Director at

Teacher at the Mixing Barcelona workshop

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Amazing Sounds Performed

By O'Connell

Things to Know

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