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"Premium Mastering Studio"

"Renzo is a true professional who delivers high quality, he is fast and he's very relaxed to work with. Tnx for the great job Renzo!"
Martijn Spierenburg, Spierenburg Music (Composer, sound design, keyboards Black Nazareth, Within Temptation)

Mastering at Masterenzo

Masterenzo Mastering is a premium mastering studio in Rotterdam, run by engineer Renzo van Riemsdijk.

After a mix is finished, good mastering enhances and elevates mixes to a professional level and your songs will start to tell the story of your album or ep as a whole.

An equally important technical part of mastering is file delivery for a physical release of your album or EP on vinyl, CD or music cassette or a digital release on platforms like Spotify, Apple Music, Tidal, Deezer and YouTube. This also involves editing and compilation of these files.

No mixing or recording here, it's mastering only...

Why mastering?

To me personally, mastering is all about emphasizing the power, emotion and impact of your music.
Connection is key. Connecting music to you and your fans, the listeners!

Why Masterenzo Mastering?

With over 19 years of experience Masterenzo Mastering is capable of delivering high quality masters that enable ultimate connection to your listening audience. I want you to be a 100% happy client.

Masterenzo Mastering has worked with artists like Charlie Dée/Hédi Carlee, Ocobar, Black Nazareth, the John F Klaver Band, Phil Bee, Voncken, Gery Mendes and many others.
Other work includes mastering of leaders for Dutch radio station "100% NL" and commercials for radio and television. More info about the artists and clients I've worked for can be found on this page.

And: Masterenzo Mastering stands for a very personal approach with fast turnaround times.


The way I work is somewhat influenced by mastering icon Bernie Grundman, an American engineer who has mastered numerous landmark recordings such as 'Aja' by Steely Dan, Prince's 'Purple Rain' and 'Thriller' by Michael Jackson.
His view, ears and mastering philosophy show an example of ultimate energy, transparencymusical impact and connection.

I'm a guitarist (no live shows anymore, I play in my living room instead). This makes it easy for me to translate what a musician wants to hear into a great sounding master that connects to the outside world, straight to your listening audience.

My approach is to take the song with most energy and vibe as the basis for the mastering session. All other songs are lifted towards that same level of energy and vibe.

Born in the seventies I'm very much intrigued by the stunning sound quality of some of the recordings made in that era. Just have a listen to 'Rumours' by Fleetwood Mac and witness its pristine production quality and please consider: louder is not always better.

Music mastered by Masterenzo Mastering

I made a Spotify playlist containing the many songs, albums and EP's mastered by Masterenzo Mastering. The YouTube page shows videos of productions I've worked on and the samples page lets you listen to music before and after mastering.

Book your mastering session

If you'd like me to master your precious song(s) or project, you can use the contact form at the bottom of this page. After you've sent the form, I will contact you as soon as possible.

if you want me to listen to your mixes first. No problem. You can also use the contact form to send me a message.
Are you considering a physical release? Check out the services for more info.

During attended sessions it's important to give the ears some rest during a break in our garden.
Bakery Van den Berg makes great sandwiches for lunch and is located at only a 3 minute walk from the studio.

I encourage you to attend the session:

The costs for an attended session are exactly the same as an unattended session.

Book your mastering session now

The Studio

The studio is located in an old house built in 1928 and breathes vibe and energy.
The room is set up with a living room atmosphere in mind and has a great sound. It connects to the outside world through beautiful stained glass windows and is lit by a classic 1950's chandelier.

single outboard rack filled with modified solid state and tube gear ensures short signal paths with maximum flexibility and power.
My analogue outboard is complemented with few plugins that enable processing not possible in an analogue world: a beautiful marriage between analogue and digital...

Heart of the studio are the custom built speakers featuring Peerless and Vifa drivers with external crossovers. They are fitting the room perfectly and together with the Amphion Two15 speakers they make the perfect listening couple for those crucial decisions in the process.

About Masterenzo

Masterenzo.pngHi there! I'm Masterenzo (Renzo van Riemsdijk). Born in 1973 in Ede, a medium sized town in the center of Holland, I discovered guitar at the age of 15. Three years later I was playing electric guitar in my first band: "Fast Fingers, Happy Girlfriends"(no joke).

After a chemistry study in Arnhem I started studying electric guitar at the Rotterdam Conservatory. During my study and after graduating in December 1999 I played electric and acoustic guitar and lapsteel in many projects and bands, mainly pop, soul, rock and singer-songwriter music.

The growing interest in the sound of recordings during my study led to the beginning of my home based mastering studio in 2003: the Masterenzo Audio Room.

After working at home for 6 years I started to work at Rotterdam based studios like the Excess Studios (2009-2012) and the Real Music Room (2012-2015). With the experience gained at those studios I decided to build my very own mastering facility in 2015: Masterenzo Mastering. In 2021 the studio has moved to a slightly bigger location. The new studio sounds even better than before.

Besides mastering I spend my days listening to music, preferably on vinyl or cd. I'm a big fan of chocolat, great coffee and cooking and I like to spend quality time in the great city of Rotterdam, accompanied by some good friends.

Columns Popunie

I write monthly columns about mastering for Dutch music platform Popunie, hoping to clarify many of the mysteries surrounding the black art of mastering.

In my columns I deal with non-technical issues such as how we experience music nowadays as well as more technical stuff like (perceived) dynamics, loudness and LUFS.



This is all included in the price of mastering at Masterenzo:

  • Feedback on your mixes when necessary.
  • High resolution masters (24 bit).
  • 24 and 16 bit masters for streaming services (Spotify, Deezer, Tidal, Apple Music, YouTube etc.)
    Many of the aggregators (party between artist and streaming service) accept both 16 and 24 bit files.
  • Embedded ISRC codes, when available, to facilitate the distribution of music rights.
  • Revision of your masters, until you are 100% satisfied with the end result.

I encourage you to attend the session: There is no difference in price between an attended or unattended mastering session. 

You can send me your mixes via WeTransfer:

Mastering for vinyl, CD or music cassette

If you want a physical release of your music on vinyl or music cassette, you'll need seperate files for the sides of your record or cassette.
This doesn't necessarily mean that you'll be needing separate masters. In almost all cases the original masters can be used for a release on vinyl or music cassette.

For a release on CD you'll need a DDP fileset.
Included in the DDP is a custom client player, allowing you to monitor exactly what is being sent to the CD duplication plant.
DDP contains relevant information like ISRC-codes, track spacing and CD-Text.

More info about mastering for vinyl can be found on the FAQ page.

The Masterclass

Frequently I get asked to share my knowledge and experience in mastering. The link between mixing and mastering is very important. The Masterclass consists of a private session in the studio in which I will elaborate on the process of mastering and why a better mix leads to the best sounding end result. Among other topics supplying masters for various media like streaming and vinyl will be handled during this session.

Don't expect to become a mastering engineer in a day but see it as a fun day instead where knowledge, coffee and a look inside the mastering kitchen provide you with the basics of the craft.

The Masterclass is based on an hourly rate of 65 euros. On request the Masterclass can also be given as an online meeting with the extra possibility to invite multiple attendees.


"The choice for your mastering studio has been a matter of gut feeling.
I'm very thankful for your sincerity, attention and explanation and I really liked the process as well.
In my opinion the tracks sound way better now and I'm very satisfied."

Misha Schreiner (Pop, Alternative)

Mastering Rates

Mastering at Masterenzo Mastering is based on a rate of 50 euro per song.
Masters for streaming are included in the price of a master.

The more songs you want to have mastered in one batch or session, the more cost-effective it will become.
Discount starts with 4 songs.

  • Compiling files for a standard 2-sided vinyl release (10" or 12"): 45 euro.
  • DDP fileset for CD production: 45 euro.
  • Compiling files for a standard 2-sided release on music cassette: 45 euro.
  • Alternative masters like instrumentals (with identical settings): 20 euro per song.
  • Alternative delivery formats, i.e. EBU-R128: 10 euro per song.
  • The Masterclass (attended): 65 euro per hour.

Payment via bank transfer (invoice or Tikkie).

All rates excluding 21% VAT.

If you live outside the Netherlands but within the EU and have a valid VAT-number you don't have to pay the VAT.
If you run a business outside the EU the VAT is taxed in your own country.

"Masterenzo has lifted my end product to a higher level. All details and nuances in the mix have been given subtle accents and the songs have become an album as a whole with some extra drive and shine.
Thanks Renzo, see you again next time!"
John F Klaver, John F Klaver Band (Blues, Americana, Pop)

Some Useful Information

Preparing your music for mastering

  1. Firstly: make sure you've checked and double checked your mixes before sending them off to mastering.
  2. If you need a pair of fresh ears during the mixing stage: I'm more than willing to listen to your mixes and provide feedback.
    All that is necessary to achieve an end product of the highest quality!
  3. Leave some room from the 0 dBFS ceiling when printing mixes to stereo.
    Volume is not that important in the mixing stage.
  4. Do not use any leveling tools like limiters or normalizers on the stereo bus, unless they are a vital part of the sound.
  5. Never change the sample rate (kHz) of the files.
  6. Print, render or bounce your tracks as 24 bit or 32 bit floating point data files (wav or aif), 16 bit or mp3 files are not suited for mastering!
    When you send me 24 bit files it's best practice to use 24 bit dither as a final step before saving your final mixes. Do not use noise shaping.
  7. Don't forget to register for ISRC, it's free! Check the official ISRC site for more info. If you are Dutch, you can apply for an ISRC at Sena
    To get to know more about ISRC, have a look at the FAQ page.
  8. And finally: make sure you've checked ánd double checked your mixes before sending them to me!

Loudness, is it really that important?

The human ear is very sensitive when it comes to changes in volume. If a song is played only one dB louder, many people choose the louder song to be the better sounding one.

But we have control over the volume knob ourselves. so we can play any song as loud as we want...
Loudness normalization ensures that every song in a playlist is played at globally the same volume (loudness).

Actually, music mastered at a less high level contains more energy (transients, micro-dynamics) and sounds genuinly more lively when played at the exact same level.

Loudness and Spotify

Without loudness normalization enabled each song on Spotify and its playlists will be played at its original volume.
Supplying a loud master will surely cause your music to be played louder.

But: as soon as loudness normalization is enabled, all songs will be normalized to the volume specified by Spotify (and other streaming services). This will cause loud masters to be turned down in volume, resulting in less dynamics and less energy.

During mastering I focus not so much on volume, but on energy and dynamics instead.
I believe that every song, album or ep has sort of an "ideal volume" depending on many factors of which genre is an important one.

Music is about connecting artists with their listeners. This connection will only get better when music is sounding really good.

This is what Spotify has to say about loudness normalization.

Nowadays more and more streaming services have loudness normalization enabled by default.


Below an example of what happened with Peter Gabriel's 'Sledge Hammer' during the loudness war. Which of the 2 will sound better when played at equal volume?

"Renzo has mastered the tracks of our first ep, to our fullest satisfaction!
The tracks have become a lot more dynamic, worth every euro. Renzo also is of great help in the production path, from ISRC codes until delivering the end product to the cd factory.
Our next ep and the album will be mastered again by Masterenzo Mastering!"
Jasper van Vught, The Legendary Orchestra Of Love (Rock and roll)

More info?











Columns Popunie







































"A driven professional who is able to lay down a beautiful sound and knows very well what the music is asking for."
Dina (Singer-Songwriter with West African influences)
Albums "Heart" and "My Own Way"

Masterenzo Mastering is approved by Apple to deliver files that meet the Apple Digital Master standard.
More info about Apple Digital Masters? Read the paper.

Apple Digital Master.png

Booking | Contact

Fill in the form and receive a personal quote

Book your Mastering Session

Fill out the form if you want to book a session and receive a personalized mastering quote or if you want to leave a message.

The more songs you want mastered in one batch or session, the higher the discount on the total price. Discount starts with 4 songs.

Please note that there is no price difference between an attended or unattended mastering session.


Make sure you've read the guidelines for preparing files for mastering prior to uploading your tracks!

Turnaround time after payment is usually between 1 and 3 days for singles. Are you working on a deadline? Let me know and I'll try to schedule your project with priority.

You can send me your mixes via WeTransfer:

Studio Address

Masterenzo Mastering
Renzo van Riemsdijk
Schielaan 17
3043 HA Rotterdam
The Netherlands

- Free parking -

 telephone.png    06 21 462 953

 envelope.png    renzo[at]



Chamber of Commerce Rotterdam: 24 34 28 39

VAT number: NL001919857B67

Renzo at Masterenzo Mastering studio

© 1973 Masterenzo Mastering | Rotterdam