1. What mastering does to your bass

The master's limiter reacts to low end before anything else. What happens to the bass when mastering, and why an uncontrolled bass ruins the master of the whole song.

Mastering works on the whole mix, not track by track: there is no “bass master”. But of all the instruments, bass is the one that most conditions the outcome, for a simple physical reason: low frequencies carry the most energy, and therefore they’re what triggers the limiter before anything else.

Your bass is what rules the limiter

A limiter turns the volume down every time the signal crosses a threshold. Since bass and kick concentrate most of the energy, every low-end hit pushes the limiter — and when the limiter pulls down, it pulls down the whole song, not just the bass.

The consequence to understand

If your bass has notes that explode, uncontrolled peaks or useless energy below 30 Hz, the master’s limiter will be working constantly to contain them. The result: vocals, cymbals and guitars duck on every bass note, the song “pumps” and loses loudness. A well-controlled bass isn’t just a bass that sounds good: it’s what allows the master to raise the song without destroying it.

Limiter

Limiter (brickwall)stock Studio One Pro 4

Studio One's brickwall limiter. Raises the perceived level of the song and stops the peaks so nothing goes over the output ceiling.

The Limiter is an extreme compressor (ratio ∞:1) that acts as a wall: no sample goes over the ceiling you set. It’s used at the end of the master chain to raise the perceived level of the song without the peaks clipping.

What it’s for

Threshold / Gain: how hard you push the signal against the ceiling. More push = louder and denser, but past a certain point distortion appears and the song gets “crushed”.
Ceiling (Output): the real output ceiling. For streaming it’s usually left at −1 dBTP to respect the true peak after conversion.

Where you’ll use it

On the master bus (Main channel), as the last insert, over the finished mix. It’s not a mix or per-track plugin: if you’re using it to “fix” a guitar, you’re in the wrong place. It’s one of the things left for the end, once the balance is already solved.

Alternatives (for reference)

FabFilter Pro-L 2 (metering and limiting modes)
iZotope Ozone Maximizer
Limiter №6 (free)

Captura de Limiter (de tu Studio One Pro 4)Pending — this one is on you

The Limiter on the Main channel showing Threshold, Ceiling (Output) and the gain-reduction meter. Ideally with the guide song master playing, to see how many dB of reduction are applied on the peaks.

Formato: PNG o JPG, legible (que se lean los valores). Dejala en prodmus_frontend/public/img/plugins/ y avisame para integrarla y validarla.

What mastering does to your bass (in context)

It compresses and levels it along with everything else, which means uneven notes become more noticeable: the master doesn’t fix them, it exposes them.
It can make it sound smaller. When limiting, low-end peaks get shaved and the bass loses part of its punch. That’s normal; which is why you deliver with headroom.
It emphasizes what was already there. If the bass had too much sub, the master will make it more obvious, not less.
It doesn’t fix the sharing with the kick. If bass and kick mask each other in the mix, they mask each other in the master too, with less room to correct.

The rule that saves you from redoing everything

🟠 Better to set it now· in mixing

Delivering a mix with a controlled bass and headroom is the difference between a master that sounds big and one that pumps. Fixing it at the mastering stage is impossible: you have to go back to the mix, and if everything is closed, that means redoing work.

The three things your bass has to bring solved before mastering:

No useless energy down low (the 30–40 Hz high-pass from mixing section 1).
Even notes in the low end (compression, and multiband if needed).
Enough harmonics to be audible without depending on volume.

What you should NOT chase yet

Quick route — thinking about mastering from the bass

Quick path

Assume the master's limiter will react to your bass before anything else.
Verify: 30–40 Hz high-pass in place, even notes, harmonics present.
Leave headroom: main bus peaks around −6 dBFS.
Don't compress the main bus in search of volume.
If the song pumps when you limit it, the problem is almost always the bass, not the limiter.

Expected result

Understanding why your bass decides the outcome of the master and what it has to bring solved from the mix: no useless energy down low, even notes, and harmonics of its own. With that idea clear, the next step is the concrete part: how much headroom to leave and how loudness is measured.