All releases on Concrete Collage are mastered by Julien Guillot (aka Stazma, Repeat Eater) at Electric Voyage Studio. If you are interested by this for your own productions, you can contact him at this address for more details :
contact@electricvoyage-studio.com
Website : https://stazmathejunglechrist.com/studio
Pricing : https://stazmathejunglechrist.com/studio#pricing
Here is his mastering portfolio :
