Online Mastering | Sara Carter | Radio Ready Mastering Service

Online Mastering

"There aren't a lot of mastering engineers accessible at this level who will provide a full and constructive critique of your mix/audio prior to supplying final masters. Will defo use again."

Let me help you

  • Turn a dull mix into a clear mix
  • Go from sounding like an average demo to a broadcast quality hit
  • Hear the night and day transformation
  • Bring separation to the instruments and vocals
  • Mixes that jump out of the speakers
  • Have an album, not a bunch of mismatched mixes
  • Free mix feedback with no obligation to buy
  • Have a professional master that’s suitable for any release format

My Mastering Clients

Current releases from some of my past mastering clients

Sad Lovers & Giants

Mission Creep


Heart Of A Lion

Birdland Avenue

Come Around


"Sara Carter at Music Mix Pro is an incredible person to work with. She makes you feel really comfortable about the whole process even when you're a newbie like me. She'll work on your music tirelessly till you are happy with it and rest assured you will be happy!!"

What it's like to work with me

1st class client experience

I want you enjoy the online mastering process and have an experience that's hassle-free. Years in the service industry means customer care is baked into how I work.

Quick communicator

Right from the start of the online mastering process you'll know when and how to contact me for a quick response.

Patient and focused

This should be fun, right? I'm easy going and fun to work with yet never take my eye off the ball and won't stop until you're 100% happy. Just read my reviews.

I actually care about the project

You're passionate about your music and I respect that. Respect and diligence are two of my most important values. I want you to love the result or I'm not finished!

Honouring the timeline and budget

I always deliver online mastering projects on time without unexpected extra fees. You'll get a fixed price at the start of the project that won't change unless your needs do. Then we'll talk.

Get Your Free Mastering Sample And Price Quote

To help you decide if my music mastering service is the right one for you, I’ll send you a free mastered sample of your song. 

You can hear for yourself the difference it makes to your own music rather than some random before and after examples with no commitment to buy.

  1. Download my free guidebook on preparing your mix for mastering here.
  2. Click the upload button to send me your stereo mix WAV file (not mp3).
  3. Add a message with the name of a commercial reference track that you’d like your master to sound like.
online mastering album and laptop showing streaming services

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What is online mastering?

Working on your final stereo mix, online mastering adds the final polish and sheen to your track, making it sound louder and clearer, ready for releasing out into the world on any format. No algorithms, just using my ears.

Bringing your songs to life

Here are some of the many creative and technical methods I use when mastering to get the best out of your mixes, giving your song clarity, impact and excitement. 


Corrects any muddy frequencies or overly bright tones. Creates separation between instruments. Also helps elements cut through the mix.


Controls the loudest and quietest parts of your mix. It keeps louder signals in check while bringing up quieter parts. It can also bring more attack or smooth out sharp transients.


Sending a reference track helps me understand how you want your mixes to sound. I'm able to critically listen to commercial recordings to bring similar tonal qualities and effects to your mix.


Tastefully using compression, clipping and limiting to make your track competitively loud without sacrificing all the dynamics of the mix

Distortion & Saturation

Similar to EQ in some ways, making elements sit into, or jump out of a mix by adding harmonic complexity.

Multiband Compression

Used only where needed to control elements in the mix that might sound too prominent or harsh.

"Sara does a great job with mastering. Reasonable pricing, good communication, fast turn around, and warm personality. Look forward to working with her in the future. 10/10."

What bands say about me...

Quote source: Google reviews for Music Mix Pro

warren huart music producer

‘Sara’s talent and dedication shines through in all of her work. Not only is she a great Mix Engineer and Mastering Engineer, her willingness to give back and help others grow is immense!’

Warren Huart

Multi-Platinum Producer, Aerosmith, The Fray

Do you usually master your own mixes?

Getting professional demos recorded and mixed is one of the biggest challenges up and coming bands face and mixing isn’t easy.

Maybe this sounds familiar…

Let me help you get the sound you want by giving you more time to do what you love; write great songs and promote your band.

female rock vocalist angie joseph for october rain mixed by sara carter

Sara is very professional and she has made an amazing job! I was a little bit scared to work distance but she has been there to reassure me. She works methodically, and it’s very effective! She has made propositions and at the end, I’ve got an amazing EP, with an amazing sound! Thank you Sara, hope to work with you again 😉

Angie Joseph

October Rain | Paris, France

The Online Mastering Process

1. Buy & Send

Click the orange "Get Your Quote" button above to tell me how many songs you'd like mastered. I'll send you a quote within 24hrs and an invoice. Once paid, I'll send an upload link for your files.

2. Mastering & Revisions

I'll send you a test master for your approval and I can make as many changes as you like until you're 100% happy. Mastering has unlimited revisions.

3. Delivery & Release

When the mastering process is complete and you've approved all the songs I'll deliver all the file formats you've requested in a neat zip folder with your metadata embedded and ready for release!

"Speed, expertise, precision -- all things that lead to a super sweet master from Sara!"

All online mastering projects include:

Free Download

free guide!

Grab my free ebook and learn how to prepare your mix for mastering and not get caught out by extra fees!

wistful sleepers band mix engineer sara carter

Sara is a wonderful mixing and mastering engineer. She demystifies all aspects of the process in a clear, thorough, and professional manner. Furthermore she listens to every request one can make and isn’t finished until you’re completely satisfied with the result. Sara is a pleasure to work with and I look forward to working with her again!

Juan Z

Free Stuff

Join for insight, pro tips, advice and free resources to help you get better at mixing music in your own home studio. Plus, get your FREE – 7 Step Guide How To Prepare Your Mix For Mastering.

Join Our Facebook Community

The Mastering Mixing & Making Music Facebook group is a place to share and discuss our adventures in making music. We help each other make better music and give each other feedback, advice, and support.