Mixing vs Mastering: What’s the Difference?

Most artists we record at Studio 56 KE have either never heard of the difference between mixing and mastering, or have heard about it and mix it up (no pun intended). That’s fine. You don’t need to know the theory to make good music. But understanding the difference helps you ask the right questions, set the right budget, and know whether your song is actually done.

Here’s what each one is, plainly, with examples.

Mixing is shaping one song from the inside

Imagine your song has twenty tracks: vocals, hi hats, kick, snare, bass, pads, backing vocals, ad libs, a sample on the bridge, and so on. Each of those tracks, on its own, sounds like a raw recording. Together, they’re a pile.

Mixing is the process of turning that pile into a song. The mix engineer:

• Adjusts the volume of each track so the vocal sits above the beat, the bass sits under everything, and nothing fights for space.
• Uses EQ to cut frequencies that muddy things up (think the boomy low mids that make a vocal sound like it’s behind a curtain).
• Adds compression to even out performance, so the quiet parts of your vocal don’t get lost and the loud parts don’t explode.
• Pans things left and right so the song has width.
• Adds reverb, delay, saturation, whatever the song calls for.

At the end of mixing, you have one stereo file: left channel, right channel, full song, balanced. It sounds like a song now, not a pile of tracks.

Mixing is about each song, on its own terms.

Mastering is polishing the final file for release

Once a song is mixed, mastering happens. The mastering engineer (often a different person from the mix engineer in serious releases) takes that stereo file and does three main things:

1. Makes it as loud and present as streaming platforms expect, without distorting or squashing the dynamics.
2. Makes it sit well next to other songs. So if it’s an EP, track 3 doesn’t sound quieter or muddier than track 2.
3. Outputs it in the formats the release needs (WAV 16 bit 44.1 kHz for Spotify and Apple Music, MP3 for some services, master versions for vinyl or CD).

You might hear about “LUFS” numbers. That’s loudness measurement. Spotify plays songs at around minus 14 LUFS. If your song is minus 20, it’ll sound quieter than the next track in a playlist. If it’s minus 8, Spotify turns it down automatically, and your punch disappears. Mastering targets the right range.

Mastering is about how your song sits in the world.

The short version

Mixing: one song, balance from inside.

Mastering: the final file, how it sounds against everyone else’s music.

You mix first. You master after. You don’t master without mixing. You shouldn’t try to mix during mastering. They’re separate jobs because they require different ears, different rooms, different goals.

Do you need both? Yes.

We’ve had artists ask if they can skip mastering because “the mix sounds fine on my headphones.” Then they release it to Spotify and wonder why it sounds thin and quiet compared to other tracks in the queue.

A mastered song holds up next to any other song in a playlist. An unmastered song sounds like a demo, even if the mix is great.

Some studios do only mixing. Others only master. A few do both in-house. Having both handled by the same team gives you consistency across the whole chain (same ears, same room, same reference standards) and typically faster turnaround, since there’s no hand-off delay between a mixing engineer and a mastering engineer at different facilities.

If the budget is tight, many studios will bundle a basic master with the mix so the final file is streaming-ready: right loudness target, consistent across your tracks, exported in the formats Spotify and Apple Music expect. That’s enough for a first single or EP. For artists chasing radio or club rotation, a dedicated mastering pass on top is worth paying extra for.

Thinking about Studio 56? We handle both mixing and mastering in-house, working in Cubase and Adobe Audition. One team through the whole chain means faster turnaround and one invoice instead of two. The bundled basic master is part of our standard package; dedicated mastering is available on top for artists chasing radio or club play.

Common mistakes to avoid

Bouncing the mix at max loudness hoping it’s “mastered.” It’s not. That just clips. You’re sending a loud, distorted file to the next engineer who now has to undo your damage.

Asking for “just master it” when the mix isn’t done. A great master can’t fix a bad mix. Garbage in, polished garbage out.

Mastering at home on laptop speakers. Your laptop can’t tell you what your sub bass is doing. Monitor accuracy matters. Rent a mastering session if you can’t afford to own the gear.

One last thing

The cleanest workflow for a single in 2026: record, mix, master, then distribute. If you’re planning the whole chain, our booking page covers the first three, and the next post in this series walks you through the last.