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48hr online mastering with pro analog gear 

Money-back guarantied

Get your best version of yourself every time with real professional mastering engineers online.



Mastering can make your songs shine and elements come to life. Rainbow Masters believes that the right master can have a powerful influence, and since we understood that your music means everything to you we are offering a revolutionary money back guaranty policy. We are building on the fact that we truly belive in our service and audio engineers power to improve your mixes, with the goal of supporting your creation in the best way possible. Give us a try!

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