• Wow, what a master. Thank you very much Jan. From now - you're my the one and only master guy.
    Roman Miroshnichenko
    Revolt by Stas Namin (Single)
  • Listening to my track after a Jan Grimm Mastering drinking hot chocolate on a cold winter day.
    Cankat Guenel
    People Of Light (Single)
  • This is fantastic! I love it! Powerful and pleasureable to listen to. Thank you so much!!
    Hasan Ozsut
    Just You (Single)
  • JGM sets the bar high when it comes to a wholesome audio mix and master. A great experience from the first concept to the final release.
    The Mountain King
    WolloW (Album)
  • Jan is an excellent sound engineer who did the very best for the mix.
    Eric Hollinger
    Gate To Xibalba (Split-EP)
  • I’m very impressed with Jan's work and would not hesitate to work with them again on the next project.
    Alex Garden
    Sonder II (Album)
  • Jan was a joy to work with: quick, friendly, flexible and very good at getting just the right sound.
    Emma Hooper
    Red Carousell



    No limiter on master bus, dither or normalization
    approx. -3 dBrms head room
    Upload via WeTransfer

    .WAV or .AIFF file
    min. 44.1 kHz at 24-bit



    Höre dir aktuelle Referenzen auf Spotify an oder erfahre, was Kunden sagen.


    Hybrid studio setup based on tools made by SPL, Antelope Audio, Manley Labs, PSI Audio, Fab Filter, Izotope, Plugin Alliance, Eventide, Telefunken (AEG).

    Mastering Service

    • Mastering for CD, vinyl, MC and digital distribution.
    • Processing up to 96 kHz, 32-bit (float).
    • Hybrid studio setup (analog and digital processing).
    • Official Apple Digital Masters provider.
    • Fast turn-around.
    • Free revisions and mix check on request.
    • Partner for publishers, labels, producers and artists.
    Offizieller Apple Digital Masters Anbieter


    My goal is to give artists the best possible service without compromise - no matter if major, indie or DIY artist. It's best to ask for your price directly.


    1. Inquiry

    Describe the scope of the project and what you hope to get out of mastering.

    2. Upload

    Upload your final mix as a .WAV file via WeTransfer or send a download link.

    3. Mix-Check

    Wait for feedback on your mix. Once everything is settled, new customers will receive an invoice.

    4. Download

    After payment is collected, receive your final master within 3-5 days via download.


    Prepare your audio material ideally for mastering. Everything you need to know about your mastering project in one document.


    Communication is the key to outstanding and convincing music productions. Therefore, I always pay attention to a targeted and direct communication with the artist, mixing engineer or label during the mastering process.

    As a mastering engineer, I am committed to objectivity and do my best to elevate your production to the next sound level in style. This ranges from subtle interventions to corrective editing steps - always with the goal of meeting the customer's requests.