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Audio Mastering Online!

We at Online-mastering supply a professional web-based audio mastering studio service, providing cd mastering in ‘major label quality’ to customers across the globe.

Our Mastering Studio

The Online-mastering studios in Germany offer superior audio mastering online. Finalizing your own music with a cd mastering in a professional mastering studio has never been easier: Create an account on our server and upload your productions. Now place an audio mastering order in the customer section of our website and we do the rest.

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Satisfaction Guarantee

Upon request, our mastering studios offer the creation of a mastering preview. We just charge a service fee of 25,00 Euros for the demo. If you proceed with your order, this charge will be fully refunded.

Test our online audio mastering service and get a good impression of future sonic results – With our convenient and low priced demo service it's easier than ever.

We guarantee: You won’t have to pay for anything if you’re not 100% satisfied with the final master.

Your Benefits

The online mastering studios was one of the first music mastering studios worldwide to focus on professional, reliable and affordable audio mastering online. The company provides professional emastering services for bands, musicians, producers and labels across the globe. More than 1200 clients in more than 50 countries rely on the audio mastering expertise of

Experienced mastering engineers

Our mastering engineers have been working in the music industry for more than 15 years. They mixed and mastered for gold award-winning artists and major companies as well for underground club music producers and independent labels. Any style and any musical genre is welcome!

Audio mastering demo upon request

Try our services and get an idea of how your music will benefit from professional audio mastering / music mastering prior placing the final order.

Mastering with satisfaction guarantee

Everyone at is committed to sonic excellence and superior service. It's a passion for us to provide convincing audio mastering quality, masters that perfectly suit your sonic needs. That’s why our engineers offer free revisions for every master they have created - just in case you want any changes.

All inclusive service / Flat rate pricing

We like to keep it simple. That's why our rates are all-inclusive. Our fixed-price online audio mastering services include all additional mixes that match the original sound-wise. So you don’t have to pay extra if you deliver any cuts, edits or instrumentals of the main mix.

High-end audio mastering gear

Our online mastering studios combine state-of-the-art analog audio mastering equipment, coupled with the latest digital mastering outboard processors and dedicated high-resolution mastering software to provide audiophile excellence with every single master.

Our unique web interface

From mix to master in record time. Our proven online mastering website offers a truly convinient and covincingly simple way to get your music productions / audio projects ready for replication and airplay. Create a free acount on our online mastering servers and upload your music. Easy.

CD Mastering Services Online was one of the pioneers of professional audio mastering services via internet. Our Germany based state-of-the-art mastering studios offer CD mastering (also referred to as digital mastering, music mastering, audio premastering etc.) with uncompromising quality combined with superior service and flat-rate pricing. Why does a good CD mastering make all the difference?