Jonas W. K.

Mastering Engineer

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423 Reviews (420 Verified)
Jonas W. K. on SoundBetter

Grammy Award-Winning, Multi-Platinum Selling (John Legend, Adam Lambert, Jhené Aiko, Amber Mark, Tinashe, Kito, ZAYN, Blackbear, ARKAI, 24hrs, NVDES, FLETCHER, Hatsune Miku, Johan Lenox, Sofi De La Torre etc.)

Hey there! I'm based in Los Angeles and ready to help you finishing up your project to a release-ready master!

I specialize in mastering. I have a unique, modern approach and a great ear for sonics that will assure each track stands out.

My studio is designed and built specifically from the ground up as a mastering studio.
With a hybrid setup based on high-end analog and digital gear, I'm able to get the best of both analog and digital worlds adding that little extra everyone's looking for.

Projects are negotiable, so feel free to reach out as much as you need to. It's key for me to help my clients to accomplish their vision and get a high quality product.

Apple Digital Masters (MFiT) Certified - The studio has been approved by Apple to provide hi-res audio files that meet its Mastered For iTunes specifications (MFiT).

My Services:

- Analog Stereo Mastering $100
- Analog Stem Mastering (8 stems) $150
- Analog Summix (combines the precision of stem mastering with the depth of mixing, 16 stems $300
- Mixing (incl. Analog Stereo Mastering) at $450

🏆 https://www.grammy.com/artists/jonas-w-karlsson/

Send me a note through the contact button above.

Credits

Discogs verified credits for Jonas W. Karlsson
  • Various
  • Tuuli (5)
  • Hans On The Bass
  • Hans On The Bass
  • Elokuu
  • Various
  • Elokuu
  • Juno (12)
  • Ricky-Tick Big Band & Julkinen Sana
  • Heikki Kuula Feat. Pää Kii & Paperi-T
  • Teflon Brothers
  • Anna Abreu
  • Kasmir
  • Kasmir
  • Isac Elliot
  • Kasmir
  • Kasmir Feat. Saara (8)
  • Sofi De La Torre
  • Sofi De La Torre
  • Robin (56)
  • Juulia (2)
  • Mariska
  • Kasmir
  • Anna Abreu
  • Madeline Juno
  • Kasmir
  • Benjamin (44)
  • Kasmir
  • Kasmir Ft. Sini Yasemin
  • Kasmir
  • Kasmir
  • John Legend
  • John Legend
  • Ricky-Tick Big Band & Julkinen Sana
  • Nopsajalka
  • Damp Cookie
  • Tuuli (5)
  • Jesse P Åck Redrama
  • Elokuu
  • Elokuu
  • Jesse P
  • Juno (12)
  • Redrama
  • Teflon Brothers
  • Heikki Kuula
  • JAG (9)
  • Kasmir
  • Kasmir
  • Kasmir
  • Juulia (2)
  • Kasmir
  • Anna Abreu
  • Kasmir
  • Kasmir
  • Kasmir
  • Kasmir
  • Merilin Mälk
  • Rahel (7)
  • Vesala
  • Costello*, Waldo, Jussi Rainio, Marko Hietala*, Ilta, Hanna Pakarinen, Eini, Roope Salminen
  • Elias Kaskinen
  • Elias Kaskinen
  • Fredi*
  • Disco (5)
  • Lyyti
  • Nopsajalka
  • Damp Cookie
  • Salomo (3)
  • Discobonus, Eddy Huntington
  • Various
  • Various
  • Tuuli (5)
  • Various
  • Jesse P Åck Redrama
  • Elokuu
  • Various
  • Elokuu
  • Various
  • Various
  • Jesse P
  • Juno (12)
  • Ricky-Tick Big Band & Julkinen Sana
  • Heikki Kuula Feat. Pää Kii & Paperi-T
  • Anna Abreu
  • JAG (9)
  • Nikolai Alho
  • Various
  • Various
  • Smurffit*
  • Mustat Silmät
  • Anna Abreu
  • Robin (56)
  • Kasmir
  • Kasmir
  • Various
  • Isac Elliot
  • Kasmir
  • Kasmir
  • Kasmir
  • Various
  • Kasmir
  • Kasmir Feat. Saara (8)
  • Traum:A Feat. Jak Polo
  • Robin (56)
  • Kauniit & Uhkarohkeat
  • Juulia (2)
  • Kauniit & Uhkarohkeat
  • Robin (56) Feat. Sanni
  • Jake Miller (3)
  • Mariska
  • Kasmir
  • Anna Abreu
  • Madeline Juno
  • Kasmir
  • Benjamin (44)
  • Anna Abreu
  • Kasmir
  • The Rasmus
  • Kasmir Ft. Sini Yasemin
  • Isac Elliot
  • Kasmir
  • Ida Paul & Kalle Lindroth
  • Kasmir
  • Danny (13)
  • John Legend
  • John Legend
  • 5miinust, Puuluup
  • Merilin Mälk
  • Merilin Mälk
  • André Nowak
  • Saya Noé
  • Costello*, Waldo, Jussi Rainio, Marko Hietala*, Ilta, Hanna Pakarinen, Eini, Roope Salminen
  • Elias Kaskinen
  • Elias Kaskinen
  • Fredi*
  • Pekka Ruuska
  • DJ Renovation

Endorse Jonas W. K.423 Reviews - 112 Repeat Clients

  1. Review by Geoffroy Douvreleur
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    It's the second time I entrust a song to Jonas for mastering it and I completely satisfied again. The mastered song sounds even much better than I was imaginating. It has the same loudness, stereo width and commercial competitiveness than my reference song (a song from Martin Garrix). I'm so happy! Also, Jonas is always responsive, have a short turnaround and he's nice. Thank you again!

  2. Review by David A.
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    Jonas is a truly phenomenal mastering engineer and an absolute world-class professional. He took my track to a whole new level, delivering incredible sonic depth, clarity, and punch that exceeded all my expectations. Working with an engineer of this caliber has been an inspiring honor. He respects the artist's vision while bringing out the absolute best in the music. I will definitely keep collaborating with him for all my future projects. Highly recommended!

  3. Review by just some english kid
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    amazing master results.. my song went from low volume bad sounding overall vocals to great improvement

  4. Review by Eugenio C.
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    Beyond world-class! Jonas took an evolutionary new mix and delivered the absolute best master of the entire catalog so far. Unbelievable punch, analog smoothness, and lightning-fast execution. A masterpiece! A+++

  5. Review by Geoffroy Douvreleur
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    I had a dance-pop song produced but it wasn't at the level of my reference songs in terms of loudness, stereo width, spectral balance. Jonas was responsive and nice and in just two days he delivers a master of my song that sounds as loud, wide in stereo, clear and good as similar dance-pop songs such Lady Gaga, Dua Lipa & Coldplay. He gave to my song the commercial competitiveness I needed and now I'm so happy and serene and really looking forward to release my song! Thank you so much to Jonas.

  6. Review by David A.
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    "Jonas is an incredible engineer! He completely understood my musical vision and delivered an epic, powerful master. His communication was professional and friendly throughout the entire process. I highly recommend him and look forward to working with him again soon!"

  7. Review by Marvin F
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    Amazing job again!!

  8. Review by Eugenio C.
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    Another perfect master! Jonas continues to be an invaluable partner for my catalog, delivering flawless quality and incredible speed with every single track. Always reliable, highly professional, and top-tier execution. A+++

  9. Review by Aron Stokes
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    Jonas is amazing!! It was like a breath of fresh air working with him and he does beautiful work!

  10. Review by Marvin F
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    Sounding amazing again :D

  11. Review by Kavale
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    by Kavale
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    Jonas is great, he got my master done quickly and when i asked for revisions there was no issues and got it done in a timely manner. will def be using him moving forward!!

  12. Review by Lawrence C.
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    Jonas was amazing to work with, friendly and able to fulfil my ask without any issues, final results exceeded expectations, would definitely ask Jonas to work on more music for me in the future.

  13. Review by Eugenio C.
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    Jonas is the gold standard for mastering! He took a technically challenging mix and turned it into an absolute masterpiece with incredible commercial loudness, warmth, and tridimensionality. His Apple Digital Masters workflow is a game-changer for any serious producer. Absolute world-class professional! A+++

  14. Review by Meghan M.
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    Jonas is such a pro! Really knew how to make the song stand out. Second time working with him

  15. Review by Dean B.
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    Elevated an already great mix to cinematic new heights. Knew it would be great, but was in no way prepared for the all-encompassing beauty of Jonas' work. Humbled and delighted.

  16. Review by Connor D.
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    Jonas was incredible to work with. Took my feedback and incorporated it pretty much perfectly after only one round of revisions and was unbelievably flexible when I made a few extra asks of him. Couldn’t have asked for a better first experience.

  17. Review by Eugenio C.
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    Jonas delivers pure world-class excellence! This is the second track he masters for my catalog, and the result is stunning. He possesses a rare analog touch that gives the music incredible loudness, warmth, and tridimensionality while keeping it beautifully clean on every playback system. A phenomenal partner for any serious production. A+++!

  18. Review by Pj M.
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    by Pj M.
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    The fourth song he’s mastered for me, he’s quick professional and the master is great.

  19. Review by Eugenio C.
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    Jonas is an absolute world-class professional! He took the raw mix and turned it into a massive, heavy-hitting, and highly competitive master. The depth, density, and low-end punch are incredible. Amazing communication and fast turnaround. Essential partner for any serious producer. A+++!

  20. Review by Devin Hayes
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    10/10 EVERY TIME!!

Interview with Jonas W. K.

  1. Q: Tell us about your studio setup.

  2. A: Amphion Two18, BaseTwo25, Hegel H30 Power Amps, Prism Sound Dream AD-2, Bricasti Design MC1, Lynx Aurora (n) 16+16, Chord Electronics Hugo TT2, iFi Pro iDSD, SPL Passeq, Chandler Curve Bender, HendyAmps Michelangelo, Maselec MDS-2, SSL The Bus+. With a hybrid setup based on high-end analog and digital gear, I'm able to get the best of both analog and digital worlds

  3. Q: How would you describe your style?

  4. A: Modern

  5. Q: Describe the most common type of work you do for your clients.

  6. A: Mastering

  7. Q: What do you like most about your job?

  8. A: I get to meet amazing new people everyday.

  9. Q: Can you share one music production tip?

  10. A: Less is more.

  11. Q: What other musicians or music production professionals inspire you?

  12. A: Everyone inspires me in some way.

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Showreel

I was the mastering engineer in this production

GenresSounds Like
  • Rihanna
  • John Legend
  • Justin Bieber
Gear Highlights
  • Amphion Two18
  • BaseTwo25
  • Prism Sound Dream AD-2
  • dCS Lina Headphone Amplifier
  • SPL Passeq
  • SPL PQ
  • Maselec MDS-2
More Photos
SoundBetter Deal

Discounts for batch or album mastering