Release your music with confidence.

Independent Mastering Studio

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A dedicated mastering engineer in your team.

Partnering with artists, producers, mixers & labels.

Cefe Flynn Mastering Engineer in his mastering studio

I truly believe releasing music is a team effort. From writing, producing, tracking and mixing, mastering is no different to any of these other stages in the record-making process – the best results always come from a direct partnership with your mastering engineer. That’s what I can offer you, a dedicated mastering engineer in your corner, your team, motivated to listen and support.

Mastering is not a “black art” –  it’s about first impressions, being objective and unbiased. It’s about having the right environment and tools for the specific task at hand. It’s about having experience in all these other production phases to fully understand the material at hand.  Having been involved in all these stages myself allows me to add a musical take on my craft.

I’d like you to consider me as part of your team. Helping you to call a record done and release ready. But don’t take it from me, take a look at what my clients have said and hear by yourself

Let’s make some beautiful records together.

Hear the difference.

Listen to before & after mastering samples. Find more samples here.

Please note: Original and mastered versions have been level matched so you can hear exactly how mastering affects a song. Samples at 128kbps MP3 for easy and fast reproduction on the website.

Alternative Matt Young
Rock Gold Flag
Indie Civic Video
Pop Chewy

What our clients say.

Here are a few testimonials from artists I’ve had the pleasure of working with. You can find and read over 90 five star reviews here.

Transparent, accessible pricing.

See below standard deliverables included and easily estimate your project’s cost. You can find out more about our rates and services FAQ here.

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Industry-leading tools.

A range of top-tier digital and analog gear housed in a custom-built mastering studio. Take a look at the studio here.

Cefe Flynn Mastering Equipment


Below are some of the most frequently asked questions we receive. If you any other questions please reach out using your preferred contact method available here.

Mastering is the finalization process where everything gets baked together. This is where the mix is perfected, and the track as a whole is worked on to give it shine, sparkle, volume, depth, punch and loudness.

During the mastering process, as an audio engineer, I will typically utilize different tools like compression, stereo width tools, limiters, maximizers, EQ, automation and more to ensure that the final master achieves the right levels to meet industry standards and the proper tone for your style of music.

You can learn more about what is mastering and why it is necessary at all here.

If you plan to release your music to the public, the benefits that come along with a professionally mastered track can be immense. 

Today’s listeners have become accustomed to a certain sound in modern recorded music. Without mastering, you’re going to have a hard time convincing people that you’re a serious artist if your own tracks don’t measure up. Even the best songs can fall flat without mastering, so this part of the process is integral in representing your music how it was meant to be heard.

My first goal in mastering is to make something sound great and not exceed its loudness potential. Its loudness potential is the point above which the sound gets worse, anything louder is by definition a compromise.

I aim to get a sound for the master that the artist and/or label are happy with in terms of their vision for the track, and that is technically correct, and this can sometimes be an iterative process.

Online mastering services such as;;; and more use an algorithm to master tracks – meaning your music will typically not be heard by human ears – instead, your track is run through some software that automatically makes adjustments to volume, compression and EQ based on a formula the algorithm applies.

Algorithm-based mastering can come in handy when you want to get a glimpse at your track's potential or when you want to check a mix against standardized processing. You may have a quick demo mix that you think sounds good, and perhaps you want to add some overall compression and limiting to get that “radio sound” through a volume boost.

However, these mastering services do tend to work by applying a rubber stamp to each track because no one is actually listening. When you use my services, you are partnering with a professional mastering engineer and will receive the personal attention your music deserves, as well as the experience and specialized equipment that come along with a mastering engineer’s touch.

Additionally, a mastering engineer will be far more likely to offer the ability to make changes to a master after the first pass, giving you more freedom in getting the sound you’re after. You can read more about algorithm-based online mastering services here.

If you’re unsure, you’re more than welcome to request a free mastering sample, and compare the services yourself.

I work independently to keep overheads down compared to larger mastering studios which tend to be more expensive, such as Studios 301, Abbey Road Studios, MasterDisk, Bernie Grundman, Gateaway, Sterling and others.

My online mastering rates typically start at $55 USD per track for stereo mastering. I also offer a discount for multiple tracks. Go to the mastering rates calculator to get an instant quote.

Depending on the complexity, mastering projects turnaround time is generally 48 hrs for singles and 3 to 7 days for EP/Albums after project confirmation.

If you are working to a deadline and need a faster turnaround time, please let me know when booking your project.

Yes, you can. I understand, hiring a stranger (who might be on the other side of the world!) to master your music can be daunting, so I’m happy to offer a free test master. You’ll be able to see how your mastered track sounds and we’ll both know whether my mastering style is right for you.

If you like what hear, you’ll then have the option to buy the release-ready final masters.

To request a free test master, please upload your track using this form, and you’ll get a sample within 72 hours.

If you are not happy with my work, you can contact me for free revisions within 30 days. I will do whatever it takes to meet your requirements during our revisions process.

If we decide that I am not the right person for your project after the revision process, contact me for a refund. My only requirement is that my mixes/masters are not released for sale or promotion and that refunds are requested within 30 days of receiving mixes or masters.

Payments are due after mastered tracks have been approved and before the release of all final deliverables.

Accepted payment methods are Paypal and Credit Card.

Depending on the country you live in and your Paypal account, during the checkout process Paypal might offer you the option to pay in 4 instalments with no interest and no late fees.

Short answer, please submit WAV file at project’s original sample rate (e.g., 44.1khz) and 24bit.

For more information, please see my guide on how to prepare your files for mastering here.

All deliverable files will be prepared as per your project-specific requirements. Standard delivery files included in all projects are:


  • 16-24bit/44.1k WAV file - CD and most online distributors (Spotify, TIDAL, etc).
  • High-quality MP3 320kbps for easy online distribution/download.

Request your test master.

If you haven’t worked with me in the past, then I’d like to invite you to request your free test master and listen to what professional mastering can do for your music.