---
title: "Understand free features and Plus · Sound Boost"
description: "What Sound Boost offers for free, which mixer features need Plus and why sales remain disabled."
url: https://soundboost.impulse-apps.de/en/guides/free-and-plus/
language: en
website: Sound Boost
publisher: Impulse Apps
---

Access and help

# Understand free features and Plus

The free single channel remains usable without signing in. Plus adds separate audio channels and sound tools, but has not yet been enabled for sale.

By Impulse Apps · Content reviewed on 7 October 2026

## The free single channel

Free features include one audio channel, 0 to 1000 percent volume, five volume presets, local level metering, light/dark appearance and the keyboard shortcut. The compressor and shared output protection also belong to the base offering.

No account is needed for these features. Browser activation for the intended tab remains required and is independent of a subscription.

## What the Plus area adds

Plus includes multiple independent audio channels, a tab overview and per-tab volume, mute, play/pause and opening. The mixer adds ten EQ bands, five sound profiles, preamp, balance, mono and Reset.

The intended price is $1.50 USD every three months; $0.50 is the monthly equivalent. Sales and the complete purchase workflow remain disabled. Read the current status on the Plus page before assuming an order is available.

## Access, browser and cancellation

Plus requires online access checks. One active browser connection is intended; switching replaces the previous connection. Free processing still does not upload audio to the subscription service.

Subscription management and the cancellation form are linked on the website. Signing in, activating a browser tab or opening a Plus page is not itself a purchase.

1. Use the free channel first to check the source and browser activation.
2. Read availability status and the specific terms on the Plus page.
3. For an existing subscription, open its management page; cancellation is explained through the linked workflow.

## A worked example

For a quiet lecture, Free is often enough: one channel, volume presets and output protection without an account. A tab overview or EQ profile belongs to the protected Plus area. The website describes those implemented features while sales remain disabled. Sign-in alone starts no subscription. If you already have access, check actual browser linking and status before assuming an audio-processing failure.

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 |
| --- | --- |
| Account expected for Free | Start Free in the active tab without an account; accounts belong to optional Plus. |
| Mixer locked | The feature needs Plus entitlement, not merely toolbar activation. |
| Purchase button missing | Sales are currently disabled. The guides do not promise available checkout. |

## Common questions

**Can I order Plus right now?**

Sales remain disabled. The Plus page shows the prepared account workflow and availability status.

**Is each payment $0.50 USD?**

No. The intended charge is $1.50 USD every three months. The monthly amount is for comparison.

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/getting-started/)

### Use Sound Boost for the first time

Activate Sound Boost in the tab you want, adjust the volume and deliberately stop processing again.

**Read the guide**

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

### Control tabs individually and keep an overview

Understand the Plus tab overview: independent audio channels, mute, play/pause and the activation each tab requires.

**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**