• 🎧 Stereo Widener

    Make an audio track sound narrower or wider using stereo Mid/Side processing. Upload your audio, choose the stereo width, preview the result, and export a processed WAV file.
    Choose a stereo audio file to begin.
    100%
    Mono Original Extra Wide
    Upload an audio file to begin.

    Compare Your Audio

    Original
    Processed
    Width —
    Duration —
    Output Stereo WAV
    Narrow Width Setting Wide
    How does the Stereo Widener work?

    Stereo audio contains information that is shared between the left and right channels as well as information that differs between them. This tool uses Mid/Side-style processing to control the balance between those components.

    At 100%, the original stereo width is preserved. Moving below 100% reduces the difference between the left and right channels, making the recording sound narrower. At 0%, the output becomes mono.

    Moving above 100% increases the Side component, making existing stereo differences more pronounced and creating a wider stereo image.
    Tip: More width is not always better. Extreme widening can make a mix sound impressive in headphones while creating phase or mono-compatibility problems on other playback systems. Compare your result with the original and check the mix in mono before using aggressive width settings.

  • A Stereo Widener helps musicians, producers, mixing engineers, podcasters, and audio creators adjust how narrow or wide a stereo recording sounds.

    Upload your audio and use the Stereo Width control to change the relationship between the left and right channels. At 100%, the original stereo width is preserved. Moving below 100% creates a narrower stereo image, while 0% converts the stereo image to mono. Moving above 100% emphasizes the existing differences between the left and right channels, creating a wider sound.

    The tool uses Mid/Side-style processing. The Mid portion represents information shared between the left and right channels, while the Side portion represents differences between them. Increasing the Side component can make panned instruments, background vocals, reverbs, synths, guitars, and other stereo elements feel farther apart.

    Stereo widening can be useful when a mix feels too narrow, but it should be used carefully. Extremely wide settings may sound impressive through headphones while causing phase and mono-compatibility problems when the track is played through a mono speaker, phone, club system, or another playback setup that combines the channels.

    The tool also includes automatic headroom protection. If widening pushes the audio beyond the available digital level, the output can be reduced slightly to help prevent clipping.

    Keep in mind that a true mono recording contains no independent Side information. Simply increasing stereo width cannot recover stereo information that does not exist in the original recording.

    After processing, compare the original and widened versions before saving the new WAV file.

    Tip: Start around 110–125% when you only want a little extra width. Instead of immediately pushing the control to its maximum, increase it gradually while listening to the center of the mix. Vocals, kick, bass, and other important center elements should still feel stable. Always check your final result in mono before committing to aggressive stereo widening.

    Related Page:

    Mixing And Mastering Services: 4 Audio Engineers To Hire Online