usbRecognized - Stereo Test – Test Left & Right Audio | usbRecognized

Hey Product Hunt community! 👋 We just shipped a new tool on USBRecognized — a free online Stereo Test that runs entirely in your browser. No downloads, no signups, no plugins. Here's what it does: 🔊 Left & Right Channel Tests — Plays a 440Hz tone to each channel individually so you can instantly tell if one speaker or earbud is dead. 🎵 Both Channels Test — Plays the tone to both channels simultaneously to verify balanced output. 🔄 Stereo Pan Sweep — Smoothly moves a 440Hz tone from left to right over 4 seconds, so you can check if your stereo imaging and panning are working correctly. ⚖️ Balance Test — Alternates between left and right channels at equal volume, letting you compare perceived loudness and catch imbalances. 🎚️ Volume Control — A 0–100% slider so you can set a comfortable level before testing. 🩺 AI Diagnostic Summary — After testing, you get a health score (0–100), possible causes for any issues, and recommended next steps. You can even export the report as a PDF or shareable URL — great for warranty claims or IT support tickets. Everything runs locally using the Web Audio API. No audio is ever recorded or transmitted. It works with wired headphones, Bluetooth earbuds, desktop speakers, studio monitors, gaming headsets, laptop speakers, and home theater systems. Perfect for anyone who just bought new headphones, is debugging a "one side is quieter" issue, or needs to verify stereo separation for gaming, music production, or video editing. Available in 11 languages. We'd love to hear your feedback! 🎧