Mastered vs Unmastered Song

What's the Difference Between a Mastered and Unmastered Track?

Does Mastering Make a Difference?


If you’re just discovering “mastering” you may not be fully aware or may even be skeptical of how much mastering makes a difference to the way a song sounds.

And you’re not to blame, since pretty much all of the songs released commercially (i.e. radio, TV, digital download and streaming) have been mastered, it’s difficult to hear what they would sound like if they weren’t mastered.

In other words, most people’s ears have never heard a raw mix, so they don’t have an “unmastered reference point” for what mastering does.

Since we’re an online mixing and mastering service, we receive thousands of unmastered songs and our job is to master them, we have a pretty good idea of what mastering can (and can’t) do for your songs.

Let’s break it down, shall we?

Do You Know the Difference Between Mixing and Mastering?

First things first: Do you know the difference between mixing and mastering?.

I find that the majority of people asking this, don’t know the difference and are usually early in their music careers (Hey nothing wrong with asking questions right?).

But we’ll just assume you know the difference between mixing and mastering, what can mastering do for you?

How Songs Sound Like Before and After Mastering

Rather than explain the difference between a mastering song and an unmastered song, let us show you so you can hear the difference yourself.

Below are some samples where we compare the unmastered song with the mastered one.

As you can hear the mastered one sounds so much more fuller, wider, brighter and of course louder.

But that is not the only thing mastering engineers do as I’ll explain later.

Rap Mastered vs Unmaster

Unmastered Unmastered

Mastered Mastered

Dance Mastered vs Unmaster

Unmastered Unmastered Electronic

Mastered Mastered Electronic

Dancehall Mastered vs Unmaster

Unmastered Unmastered

Mastered Mastered

Rock Mastered vs Unmaster

Unmastered Unmastered Rock

Mastered Mastered Rock

Need to Hear More Samples?

Take a listen to all of our before and after samples where we show what a song sounded like before and after it was mastered.

he “before” song is the actual mix down that was given to us by an artist, while the “after” is the mastering job we did on it.

You can hear how mastering makes everything sound more professional even when the song mixes were less than ideal.

I should also note I hate to use the word “professional” because personally nothing “professional” should be implied about art (it makes it sound like we’re doing something boring like selling insurance or accounting).

Is Your Mix Even Good Enough?

We’ve been mastering songs online for a few years now and have realized that the majority of songs we receive are mixed terribly, which is why I wrote the controversial article You Don’t Need Mastering If Your Mix Sucks (which you may want to read before proceeding any further, don’t worry I’ll wait until you get back).

Okay great to have you back.

As you can probably guess, there’s a certain threshold that mixes have to be over in order for the mastering engineer to work their magic.

By “threshold” I mean the mix has to be good enough to be mastered, mastering rarely ever works for anybody whose mixing their own music and has no clue what they’re doing.

You just have to think of it logically, if you only mix your own songs and at most how many songs do you make a year? 20? Maybe 30?

You’re not really going to compare with audio engineers mixing 40 to 60 songs per month!

Yes that’s about how many I personally do.

And I’m not saying that to brag, I only fully understood what I was doing after 3 years of mixing full time.

You’re not going to compete with someone that’s doing this full time and for a living (that would be like thinking you’re going to win going one on one against Lebron).

C’mon son!

If you’re in this situation, it’s better to get your song mixed professionally and then mastered.

If you’re curious and I assume you are if you’ve read this far, we offer an online mixing and mastering service. If you go to that page, you’ll hear some samples of where we compare the artist’s mix to our own mix and master (and again the differences are even more shocking).

If you’re really good at mixing, I’ve written some guidelines titled: How to Prepare Mix for Mastering to help you create the perfect mix for mastering.

I find EDM producers and older rockers are somewhat decent at mixing their own stuff and just need mastering to get the polish they’re looking for.

A good way to visualize this is like this: recording and mixing is 70 to 80% of how good your songs going to sound and mastering is the last 20 to 30%.

Mastering isn’t going to solve all your recording and mixing issues, because mastering can’t fix a bad mix and anybody that says it can is probably trying to sell you mastering.

Why You Shouldn’t Get MP3’s Mastered

Even though on our upload page we make it pretty clear not to upload MP3s as they’re not suitable for mastering, we still get a ton of people uploading MP3s.

While it is frustrating and a big time waste to explain to all those people to kindly upload a .WAV or .AIFF file, I’d like to speak on why MP3s are not good for mastering (and hopefully some of you will stop uploading MP3s).

First there’s the boring reasons, such as they are already compressed and therefore do not have the required bit rate to be put under the “stress” mastering puts on them to come out sounding good.

I could go further here but your eyes (along with my eyes) will probably glaze over.

The real reason we don’t accept MP3s is because it tells us something about the “artist” uploading it.

First, it tells us that they are not detail oriented because they missed in bold where it says DO NOT SEND MP3S.

A person like this is probably not going to have a great mix.

In fact, pretty much 99% of the time, the MP3s we receive are not capable of being mastered NOT because they were sent in MP3, but because the mix is embarrassingly bad.

Do you think we want to work with these kind of people? Nope. They obviously don’t take their craft seriously.

One of our guidelines for the free mastering sample is that you must be serious about having a professionally mastered song.

These are the people we want to work with.

And 99% of the time these people don’t waste our time.

We admire their dedication to perfecting their song.

They want to get it right as much as we do.

A Fresh Set of Unbiased Ears

Another way to look at mastering is as the final check on your music.

It’s getting someone with a fresh set of unbiased ears to make the final tweaks before you release your songs out to the world.

Why would you want to do this?

One reason would be so that they play better on varying sound systems.

A good mastering engineer will not make your songs sound worse and will not hamper your song’s creativity, they’ll likely understand the sound you’re going for and help get you there (their only limit being the quality of the recording and mix of course).

They wont apply a preset as again mastering is an art and a science.

Most of the time, mastering engineers will be addressing the problem frequencies in your song.

A lot of times, I’ll get songs that don’t have any low end, and the person who mixed it has no idea, because the room they mixed it in didn’t tell them (meaning they couldn’t hear these missing frequencies).

So another thing mastering engineers will do is try to add missing frequencies or cut frequencies that have been overemphasized, which is usually caused by a poor listening environment and/or someone who doesn’t know what they’re doing.

Loudness Wars

A commentator brought up the fact that the unmastered songs are not as loud as the mastered songs, to which I would respond, yes that’s the point.

How would you make that unmastered song louder I’d ask? Through normalization? Turning up the level on the main stereo fader?

Adding a limiter or compressor?

Go do any one of those with your equipment and experience and then send the same song to a good mastering engineer to use their high end equipment and years in the game and see which sounds better.

Remember about playing against Lebron? It would be much wiser to play with Lebron right?

Are You Getting Your Songs Mastered?

So to recap, does mastering make a difference?

It most certainly does and you’ll get the most bang for your buck when you have a song that’s been mixed professionally.

In the comments below I’d love to hear any objections you have toward mastering?

Why haven’t you had your song mastered?

If you have had your song mastered? Did someone good do it? And did you hear the difference?

More Answers to Your Mastering Questions



Andre is the head audio engineer at ADG Mastering, which he helped found in 2012. For the last 10 years, he has made it his mission to empower aspiring artists and musicians from around the world. You can see more of Andre's writings on our Blog.


  1. It would have been more useful to hear the before and after at the same volume. Of course the point of mastering is to increase the volume, but that is not really the differences we are hoping to hear in a before and after. The fact is, everything sounds better when it’s louder. Put the mastered version quiet and the un-mastered version loud and see if people still respond to the mastered version.

  2. Hey bro! great article, wise words. First I agree with Andy’s comment about the volume on the unmastered tracks, they should be balanced to tell a real difference. On the other hand, totally agree with the Lebron’s analogy but I still think there are producers out there that are very technical with their audio/music production and sound performance and are able to produce great mixes and even able to master them, but these are very few, none the less. I think the best advantage of mastering is that the engineer has another pair of fresh ears, banging equipment and most importantly experience, to me the latter is paramount.

  3. I definitely hear some advantages to the mastered versions but also some disadvantages. the mastered copies sound crispy and hot in the upper frequencies. Voices take on a crispiness that doesn’t exist in real life. Also by dynamically compressing the music it also takes on a hardness and harshness that you don’t hear in the un-mastered copies. I feel that modern music is way to dynamically compressed thus the loudness wars complaints. Mastering is definitely beneficial but only if it isn’t taken to far.

Leave a Reply

Your email address will not be published. Required fields are marked *