For the highest quality results, professional-grade desktop software and open-source tools are superior to web-based converters. 1. yt-dlp (The Gold Standard)
While YouTube technically uses lossy compression (like or AAC ) for all its streams, you can still extract the "raw" audio stream exactly as it exists on YouTube’s servers to ensure you aren't losing any more data. Why "Raw" Audio Matters download raw youtube audio
Can extract the highest-bitrate Opus file (the codec YouTube uses for its best audio). 2. 4K Video Downloader+ For the highest quality results
Supports extracting audio as original M4A or OGG. Site: 4K Download 3. NoteBurner YouTube Video to Audio Ripper download raw youtube audio
Creators and audiophiles who want the source file.