mixing & mastering services

interstellar quality

- Spotify, iTunes, Google Play, etc.

faster than speedlight

- up to 24 hours delivery

cheaper than a spaceship

- prices from €19 per song



the Science of Music



Stereo Mastering

Stereo mastering is a classic method of mastering best for all music genres and professional studios mixes. This music mastering is suitable for all kind of music, and provides an excellent overall optimization of your tracks.


Stem Mastering

Stem mastering is a hybrid between mixing and mastering. Stem mastering uses groups of “like” instruments such as drums, synths, guitars, bass, vocals, brass section etc. It occasionally uses automation, but not always.

Mixing + Mastering

Mixing is balancing multi-track audio files using faders, (i.e. kick, snare, toms, cymbals, bass, keys, lead vox, brass, strings, backing vox) in mixing there is discrete control over all the elements of a multi-track recording which is usually automated to a high degree.


We are default vibration - professional music studio based in Sofia, Bulgaria. We specialize mainly in audio post production and services like mastering, mixing and recording of electronic dance music. We do not wish to underestimate all the other genres, but we've gained most of our experience working particularly on such projects.

Setting up the studio took more than 2 years of efforts and extensive research. During that time we were able to select the best equipment to meet the specific audio processing requirements in the endless depths of the EDM genre, which constantly develops and evolves.

Today we can offer high-end audio post production services to everybody who have devoted their lives to the synthetic sound (composers, producers, djs, labels, etc.) without, of course, turning our backs on those whose first steps are just around the corner.


Mastering preview split in two halves: before and after applying mastering.

You may notice that some of the songs are louder or quieter than others!
Output volume of the mastered material is based on customer preferences or referential song that they provided us with!

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