If you are looking for a specific dual-audio file, 1337x likely has it, and the community comments are usually helpful in verifying if the audio tracks actually work.
Groups like QxR often provide high-bitrate audio and 10-bit HEVC video, which offers better visual quality at smaller file sizes compared to standard releases. 1337x dual audio
Finding these specific files on 1337x.to is straightforward if you use the right search terms: If you are looking for a specific dual-audio
Dual audio files are essentially digital containers (often in .mkv format) that hold multiple audio streams. This is different from "hardcoded" audio where only one language is available. 1337x likely has it