---
title: "Compressor, headroom and output protection · Sound Boost"
description: "Understand Sound Boost’s shared output protection and why a limited peak does not mean a repaired source."
url: https://soundboost.impulse-apps.de/en/guides/output-protection/
language: en
website: Sound Boost
publisher: Impulse Apps
---

Start and volume

# Compressor, headroom and output protection

Gain can make quiet sources easier to hear while also raising peaks. Sound Boost processes audio with level control whose limits matter when adjusting it.

By Impulse Apps · Content reviewed on 7 October 2026

## What output protection does

The free channel includes a smoothing compressor and overall output protection. A shared stereo limiter limits peaks even when Plus processes multiple channels. It treats the two stereo sides together.

The limiter needs a short lookahead, with browser and device latency added. It therefore does not promise processing without delay. Clipping or noise already in the source remains part of the recording.

## Leave room instead of maximising settings

1. First set a suitable tab volume without strong sound adjustments.
2. In the Plus mixer, add small EQ adjustments and listen to the overall output.
3. Lower preamp or volume if peaks or audible pumping become distracting.
4. Compare with Power off. This helps identify whether the problem is already in the original source.

## The actual playback remains decisive

A limited digital output does not determine the volume of your amplifier or headphones. Adjust device volume too. Do not use high gain to compensate for a wrongly connected or muted output.

## A worked example

A clip contains isolated loud peaks. Sound Boost combines compression with final output protection; Plus EQ accounts for additional headroom. This can limit peaks but cannot restore a damaged recording. Compare the problematic passage with Power off and then low gain. If the defect already exists in the source, avoid changing several protection and EQ controls to conceal it.

Add your observations. This template processes no files and sends no report.

### Check the result

### If something is wrong

**Observation and next step**

| Observation | Next step |
| --- | --- |
| Original is already distorted | Try another recording or lower source level; lost quality is not restored. |
| More percent has little effect | Consider protection and source level and judge intelligibility instead of the maximum setting. |
| Sound fluctuates | Compare with original at low gain and change one parameter at a time. |

## Common questions

**Can the limiter prevent every distortion?**

No. It limits output peaks, but does not repair the recording or overcome output-device limits.

**Why does audio sound different at extreme settings?**

Compression and limiting intervene more strongly. Reduce gain and compare one setting at a time.

Browser activation and a Plus entitlement are separate requirements. Protected content and specialised players can have their own limitations.

[Help and contact](https://soundboost.impulse-apps.de/en/support/)

## Continue here

[Start and volume](https://soundboost.impulse-apps.de/en/guides/adjust-volume/)

### Adjust volume from 0 to 1000 percent

Use the Sound Boost slider and understand how tab volume, source audio and device volume work together.

**Read the guide**

[Understand the Plus mixer](https://soundboost.impulse-apps.de/en/guides/understand-the-equalizer/)

### Adjust the 10-band equalizer deliberately

Bass, mids, treble and preamp in the Sound Boost Plus mixer: small changes, neutral comparisons and gain reserve.

**Read the guide**

[Understand the Plus mixer](https://soundboost.impulse-apps.de/en/guides/balance-and-mono/)

### Use balance and mono in the Plus mixer

Understand left and right channels, test balance and deliberately listen to stereo in mono.

**Read the guide**