Hearably vs FxSound
FxSound is a freemium desktop audio enhancer with system-wide processing. Hearably is a browser extension with per-tab control, professional DSP, and AI-powered captions. Two approaches to better audio — here is how they stack up.
Real-time enhancement via extension · Or upload a file for free in Studio
FxSound (formerly DFX Audio Enhancer) is one of the oldest names in desktop audio enhancement, with roots going back to the early 2000s. The app went through a major transformation in 2022 when it became open-source and adopted a freemium model. Today, FxSound offers a free tier with basic audio enhancement and a premium tier with advanced features. It installs a system-level audio driver on Windows that processes all audio output — music apps, games, browsers, video calls, system sounds — through its DSP chain featuring EQ, 3D surround, bass boost, dynamic range processing, and clarity enhancement.
Hearably is a Chrome and Edge browser extension that processes audio at the tab level using the Web Audio API. Instead of a system-wide driver, Hearably intercepts individual tab audio streams via Chrome's tabCapture API and routes each through an independent DSP chain: 10-band parametric EQ, 3-band Linkwitz-Riley multiband compressor, per-band gain stages up to 800%, and a look-ahead limiter that prevents distortion at any volume. Hearably also includes AI-powered live captions — a feature category FxSound does not enter.
The fundamental trade-off mirrors other browser-vs-desktop comparisons: FxSound covers all system audio but processes it as a single mixed stream. Hearably covers only browser audio but processes each tab independently with per-tab settings. For users whose audio world lives inside Chrome — YouTube, Netflix, Spotify Web, Zoom, Twitch, online courses — Hearably's per-tab precision and AI features offer more practical value. For users who depend on desktop Spotify, offline games, or creative software, FxSound's system-wide reach is essential.
Both tools have genuine strengths, and this comparison aims to help you choose based on your actual workflow rather than marketing claims. We'll cover architecture, audio quality, features, pricing, and the scenarios where each tool excels. And yes — you can use both together without conflict, which we'll explain in the technical section.
Need the same fix elsewhere? See also Hearably vs Boom 3D, Hearably vs Letasoft Sound Booster and Hearably vs Volume Booster — all three use the same audio engine, tuned per platform.
System Audio Driver vs. Per-Tab Web Audio Processing
FxSound installs a Windows audio driver (APO — Audio Processing Object) that integrates with the Windows audio pipeline. All audio from every application passes through FxSound's processing before reaching the output device. The processing includes EQ, bass enhancement, a "3D surround" effect, dynamic range processing, and a clarity algorithm that boosts upper harmonics. This system-level approach means universal coverage but single-stream processing — FxSound cannot apply different settings to different applications.
FxSound's dynamic range processing uses traditional compression and limiting without a look-ahead buffer. At moderate enhancement levels, the results sound good. At aggressive settings, the lack of anticipatory limiting means peaks are caught reactively, which can produce pumping artifacts and transient distortion. The 3D surround effect uses cross-feed and inter-aural time difference manipulation, which is effective for headphone listening but can cause phase issues on speakers.
Hearably's architecture is fundamentally different. Chrome's tabCapture API creates a separate MediaStream for each processed tab. Each stream is routed to an independent instance of the full DSP chain in an offscreen document. The chain includes a 10-band parametric EQ (BiquadFilterNode peaking filters at ISO frequencies), a 3-band Linkwitz-Riley crossover splitting at 250 Hz and 4 kHz (cascaded 2nd-order Butterworth for phase alignment), per-band compressors with adaptive ratios that scale with gain, per-band direct gain stages providing the actual volume increase, and a look-ahead limiter AudioWorklet with a 5ms circular buffer for zero-clipping output. Total latency is under 10ms. Because each tab is an independent instance, you can run entirely different settings on each — something architecturally impossible with FxSound's single-stream driver.
How to get the best audio on Hearably vs FxSound
Choose FxSound if you need system-wide enhancement on Windows
FxSound processes every application's audio — desktop Spotify, VLC, games, creative software, system sounds. If you want one tool that enhances everything, FxSound's driver approach covers the entire system.
Choose Hearably if your audio life is in the browser
YouTube, Netflix, Spotify Web, Zoom, Meet, Twitch, podcasts, online courses — if this is 80%+ of your audio, Hearably covers all of it with per-tab precision that FxSound cannot match. Each tab is its own independent audio universe.
Choose Hearably for Chromebooks and non-Windows platforms
FxSound is Windows-only. Hearably works on Windows, macOS, Linux, and ChromeOS. If you use a Chromebook for school or work, or switch between a Mac and PC, Hearably provides consistent enhancement everywhere.
Choose FxSound if you want 3D surround audio
FxSound's spatial audio processing creates a convincing sense of width and depth on headphones. Hearably focuses on volume, EQ, and dynamics — it does not attempt spatial audio simulation.
Choose Hearably if audio quality at high boost matters
Hearably's look-ahead limiter prevents any distortion at any boost level, including 800%. FxSound's dynamic range processing can introduce artifacts at aggressive settings because it reacts to peaks rather than anticipating them.
Choose Hearably if you need live captions
Hearably Pro includes AI-powered real-time transcription for any browser audio. This is a unique capability that no desktop audio enhancer — including FxSound — offers.
Built for this exact use case
Per-Tab Independent Audio Chains
Each browser tab runs its own complete DSP chain with independent volume (up to 800%), EQ, compression, and presets. A quiet lecture at 400% on one tab while music plays at 120% on another. FxSound processes all audio identically through one system-wide chain.
Look-Ahead Limiter for Zero Distortion
A custom AudioWorklet scans 5ms ahead for peaks and smoothly reduces gain before any clipping. At 800% boost, THD stays below 0.1%. FxSound's traditional processing introduces audible artifacts at extreme enhancement levels.
AI-Powered Live Captions
Whisper-powered real-time transcription generates live captions for any browser audio. Essential for accessibility, noisy environments, and language learning. FxSound has no transcription capability.
True Cross-Platform Support
Hearably works identically on Windows, macOS, Linux, and ChromeOS — any platform running Chrome or Edge. FxSound is Windows-only, leaving Mac, Linux, and Chromebook users without a solution.
Choose your method
Different situations call for different tools. Hearably gives you both.
Chrome Extension
Enhance audio live while you stream. The extension intercepts your tab's audio and processes it in real-time — volume boost, EQ, presets — without downloading anything.
- Streaming on Hearably vs FxSound, Netflix, Spotify
- Video calls on Zoom, Meet, Teams
- Any website with audio
- When you want instant, always-on enhancement
Free Online Studio
Upload an audio or video file, apply volume boost + 10-band EQ, preview in real-time, then download the enhanced WAV. Your file never leaves your browser.
- Downloaded videos or music files
- Podcast episodes you want to boost before sharing
- Voice recordings, lectures, interviews
- When you need a permanently enhanced file
Pro tip: Use a YouTube-to-MP3 tool to download the audio, then enhance it in Hearably Studio with EQ + volume boost. Perfect for offline listening, DJ sets, or sharing on social media.
Three clicks to better audio
Install
Add Hearably from the Chrome Web Store. Under 300KB, installs in seconds.
Enhance
Click the Hearably icon and tap "Enhance." Boost kicks in instantly.
Enjoy
Adjust volume, EQ, and presets. Works on any website with audio.
Hearably vs FxSound
| Feature | Hearably | FxSound |
|---|---|---|
| Price | Free tier available. Pro: $4.99/mo or $49.99/yr | Free tier + premium subscription |
| Platform | Chrome & Edge on any OS (Windows, macOS, Linux, ChromeOS) | Windows only |
| Scope | Browser audio only (per-tab control) | System-wide (all applications) |
| Max boost | 800% with look-ahead limiter | System-wide boost (level varies) |
| EQ | 10-band parametric (31Hz–16kHz, ±12dB) | Multi-band EQ with presets |
| Spatial audio / 3D surround | Not available | Yes — 3D surround virtualization |
| Per-tab / per-app control | Yes — independent chain per tab | No — single system-wide processing |
| Distortion prevention | Look-ahead limiter (5ms, zero clipping) | Traditional limiting (reactive) |
| Live AI captions | Yes (Pro) — Whisper-powered transcription | No |
| Installation | Browser extension, 3 seconds, no admin | Desktop app + audio driver, admin required |
Frequently asked questions
Is FxSound free?
FxSound offers a free tier with basic EQ and enhancement. The premium tier (additional presets, advanced features) requires a subscription. Hearably also has a free tier (120% boost, 3-band EQ) with Pro features at $4.99/month or $49.99/year.
Does FxSound work on macOS?
No. FxSound is Windows-only. There was a macOS version years ago but it has been discontinued. Hearably works on any platform that runs Chrome or Edge, including macOS.
Can FxSound boost individual app volume?
No. FxSound processes all system audio through a single chain with one set of settings. It cannot apply different EQ or boost levels to different applications. Hearably processes each browser tab independently.
Which sounds better for music?
For casual listening, both sound good at moderate settings. FxSound's 3D surround and bass boost effects are enjoyable for headphone music listening. Hearably's multiband compression and look-ahead limiter produce cleaner results at high boost levels and better-controlled dynamics.
Can I use FxSound and Hearably together?
Yes. FxSound processes audio at the Windows system level, and Hearably processes audio within the browser. Browser audio passes through Hearably first, then through FxSound's driver. They do not conflict. Use Hearably for per-tab browser control and FxSound for desktop app enhancement.
Does FxSound have live captions?
No. FxSound is purely an audio enhancement tool — EQ, bass boost, surround, and dynamics processing. Hearably Pro includes AI-powered real-time transcription that generates live captions for any browser audio.
Which uses less system resources?
Hearably is a lightweight browser extension (<300KB) that only processes audio when actively enabled on a tab. FxSound runs continuously as a system service, processing all audio at all times. In practice, both use minimal CPU (1-3%), but FxSound's always-on nature means it's always consuming some resources.
Is FxSound open source?
Yes, FxSound went open-source in 2022. The core audio processing code is available on GitHub. Hearably is not open source but publishes detailed technical documentation about its DSP architecture.