Stereo Amplifier True Sur

Stereo Audio to Real Surround Sound: Take Your Sound to the Next Level!

Get ready to rediscover your favorite music and movies! Transforms flat stereo audio from your browser into a vibrant 3D surround sound experience (2.1, 4.0, 4.1, 5.1, 7.1, and 7.2), plus a brand new 8D Virtual mode with HRTF. It is the ultimate tool to get the most out of your speakers or headphones, and it is completely free!

⚠️ LIMITATIONS & IMPORTANT NOTES

📺 Full Screen Mode Restriction: Chrome's tabCapture API has security restrictions that block standard fullscreen mode. Press F11 to force fullscreen while capturing.

🎞️ Per-Tab Permissions: Chrome requires you to grant permission for each tab by clicking the extension icon on it.

〰️ Note for Optical Cable (SPDIF/Toslink) Users: Optical cables only support 2 channels uncompressed. Browsers send PCM audio, so your system reports stereo. Don't worry — manually select 5.1, 7.1 or 7.2 and the extension generates the surround signal. Your receiver handles the rest. Ignore the warning icon.

🚀 WHAT'S NEW & HIGHLIGHTS

🌀 8D Virtual (New!) Brand new spatial mode that rotates audio around your head using true HRTF (Head-Related Transfer Function). Adjustable rotation speed (2-15 seconds per revolution). Works on any hardware — headphones strongly recommended for the full immersive experience.

🎭 Audio Presets Switch instantly between optimized configurations: Cinema Action, Voice/Podcast, Music Stereo+, Gaming, or your own custom setup. All your manual tweaks are preserved when you return to Default.

🔊 Smart Global Mode (Set it and Forget it!) Activate once and the extension follows your audio:
- 🕵️ Automatic Detection of the active tab
- 👀 Seamless Switching between YouTube, Spotify, etc.
- 🚦 Patient resume when you hit play again
- 🎯 Always Active option: capture starts automatically when you open the popup

🎧 Smart Mono Mix (New!) Detects when only one channel has audio (common in old recordings or bad uploads) and automatically copies it to the other side, eliminating mono playback issues without you doing anything.

🎚️ 7-Band Graphic Equalizer Full control over bass, mids and highs with intuitive sliders, plus pre-amplification (0-200%) to boost quiet sources.

🌐 Cinematic Surround Sound (Improved Matrix) The audio engine intelligently separates vocals to the front while sending ambient sounds to the rears. Configurable ambiance depth, direct rear send, L/R channel inversion and adjustable delay buffer for that real theater feel.

🎛️ Free Channel Routing Reassign any input channel to any output. Send Center to LFE, swap surrounds, mute specific channels — total flexibility.

📊 4-View Audio Analysis Switch between four real-time visualizations:
- Logarithmic frequency spectrum
- Time-domain waveform
- 7-band level meters
- 3D sound field showing speaker placement and activity

🔊 Deep Bass and Clear Vocals Smart Subwoofer/Center separation with professional-grade Linkwitz-Riley filters. Customizable crossover frequencies (50-500Hz Center HPF, 80-250Hz Subwoofer LPF) with built-in test mode to isolate each channel.

🎛️ Automatic Volume Control (Normalization) Smart AGC with look-ahead to keep ads and content at consistent volume without harsh peaks.

⚡ Performance Optimizations
- Auto Silence Bypass: pauses CPU-heavy processing when there's no audio
- Configurable Visualizer FPS (Auto/60/30/15)
- VU Meter smoothing
- Lightweight AudioWorklet processing with zero garbage collection in the hot path

☁️ Sync Across Devices Sign in with your Google account and your settings travel with you to every Chrome installation.

🌍 24 Languages Available in English, Spanish, French, German, Italian, Portuguese (BR/PT), Russian, Japanese, Chinese (Simplified/Traditional), Korean, Hindi, Arabic, Polish, Dutch, Turkish, Indonesian, Ukrainian, Swedish, Vietnamese, Czech, Thai and Hebrew.

⚙️ Automatic Configuration On install, the extension detects your hardware and selects the best system. You can always change it manually.

📈 Anonymous Statistics (Opt-Out) Helps improve the extension. Zero personal data sent. Can be disabled in Settings.

🎁 ABOUT DONATIONS: 100% free with all features unlocked. The "Donate" tab is completely optional.

🔒 PERMISSIONS NOTE: The "tabs" permission is needed only to detect which tab is playing and active. We do NOT read, store or share your browsing history. Your data NEVER leaves your browser.

🛠️ SUPPORT: Use our Help Center before leaving a negative review:
👉 https://chromewebstore.google.com/detail/hpmbefgjnjkkdcgdbjplmdhiedhgknek/support

Positive reviews keep this project free. Thank you!