Grammy Award-Winning, Multi-Platinum Selling (John Legend, Jhené Aiko, Amber Mark, Tinashe, Kito, ZAYN, Blackbear, 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
Send me an email through 'Contact' button above and I'll get back to you asap.
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
- 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)
- Anna Abreu
- Kasmir
- Kasmir
- Kasmir
- Kasmir
- Rahel (7)
- Merilin Mälk
- Rahel (7)
- Vesala
- Costello*, Waldo, Jussi Rainio, Marko Hietala*, Ilta, Hanna Pakarinen, Eini, Roope Salminen
- Elias Kaskinen
- Elias Kaskinen
- Fredi*
- 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
- 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*
339 Reviews - 87 Repeat Clients
Endorse Jonas W. K.
check_circleVerifiedLove working with Jonas! Always super reliable and consistently high quality mastering.
check_circleVerifiedJonas was quick, communicated well and delivered and awesome master. Will defiantly use again and recommend :)
check_circleVerifiedJonas always be responsible and supportive.Will be back.
check_circleVerifiedBatting 1000
check_circleVerifiedJonas kills one track after another ! Highly recommended !
check_circleVerifiedJonas was professional and understood the sound we were going for. Nailed it amazingly well! Look forward to working with him again!
check_circleVerifiedJonas is an amazing Mastering Engineer. Super timely and patient through the process. Would highly recommend.
check_circleVerifiedJonas is a part of the team at this point. Quality is an understatement.
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Amazing sound
check_circleVerifiedWorking with Jonas has been by far our best experience with a mastering engineer. Great sound and smooth communication. 👌🏼
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Jonas crushed it again
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Jonas is really talented ! We have worked on 3 songs together and I am more than pleased with his work.
Would totally recommend him ! 
check_circleVerifiedGreat master and a fast turnaround!
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Great work as always and very fast turnaround!
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Jonas was awesome, took direction thoughtfully and really took the record to another level. Was quick on turnaround and budget friendly. His swag was obvious
check_circleVerifiedOnce again 110% satisfied with one song mastering !! Always a pleasure to work with Jonas !!!
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Jonas was super great to work with! Brought the song to a high-quality level!
check_circleVerifiedI am so thankful that Jonas was willing to share his wealth of experience and talent with me. It made all the difference to this process. An incredible engineer.
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Happy to have found Jonas. He delievers quality work in very less time. My go to mastering engineer!
check_circleVerifiedWorking with Jonas has been nothing short of incredible. His communication is always clear, timely, and professional—which makes the entire process smooth and stress-free. Every time he delivers, the quality blows me away. You can tell he puts real care and attention into every detail. If you're looking for someone who consistently brings excellence to the table, Jonas is your guy. Highly recommend!
Interview with Jonas W. K.
Q: Tell us about your studio setup.
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
Q: How would you describe your style?
A: Modern
Q: Describe the most common type of work you do for your clients.
A: Mastering
Q: What do you like most about your job?
A: I get to meet amazing new people everyday.
Q: Can you share one music production tip?
A: Less is more.
Q: What other musicians or music production professionals inspire you?
A: Everyone inspires me in some way.
I was the mastering engineer in this production
- Mastering EngineerAverage price - $100 per song
- Mixing EngineerAverage price - $300 per song
- Dolby Atmos & Immersive AudioContact for pricing
- Rihanna
- John Legend
- Justin Bieber
- Amphion Two18
- BaseTwo25
- Prism Sound Dream AD-2
- dCS Lina Headphone Amplifier
- SPL Passeq
- SPL PQ
- Maselec MDS-2
Discounts for batch or album mastering
