Convert mono music to stereo

Give older mono recordings a new stereo interpretation. AI places musical parts across the mix, instead of simply spreading the same signal across two speakers.

Upload audio

Drag & drop or click to browse (multiple files supported)

Supports: MP3, MPEG, MP2, MPGA, WAV, WAV, AIFF, AIF, AIFF, AIF, FLAC, AAC, OGG, OGA, OPUS, M4A, MP4, WEBM, WMA, ALAC, AMR, MID, MIDIMax size: 50MB.

How to convert mono audio to stereo

Import your recording

Upload a mono recording or paste a supported audio link. Stereo files are accepted too: their channels are mixed to mono first.

Run Stereoize in Enhance

In Studio, run the selected Stereoize model. It interprets the music and generates a new left and right channel arrangement.

Listen and download

Compare the original with the enhanced version. Download the new stereo audio directly, with both channels in the file.

Mono to stereo before and after

Rock · Guitar · Upscaling

Original Neural Analog

Jazz · Rock · Song · Restoration · Upscaling

Original Neural Analog

Rock · Restoration

Original Neural Analog

Hear mono-to-stereo results from users

Compare original recordings with shared Stereoize audio versions. Every result here uses this model.

More User Examples

How Stereoize creates a stereo mix

Copying a mono signal into left and right channels still sounds mono. Conventional widening creates a sense of space by changing each side's timing or phase.

Stereoize uses AI to recognize musical parts and give them distinct positions in the mix. You get a new stereo interpretation shaped by the song's style.

Still mono

Ambiance only

neuralanalog

Musical placement

A creative interpretation of the music

A centered foundation

Bass and drums can stay anchored in the center while the rest of the arrangement opens around them.

More space around the voice

Vocals can gain a more expanded image, with reverb spread around the voice instead of everything sitting in one mono point.

Instruments across left and right

Guitars and percussion can move across the left and right channels. The placement depends on the song and its style.

Made for mono songs from before the 1970s

Older mono music is what this model was made for, and where it works best. Do not expect useful results on modern productions. The stereo placement is a creative interpretation of your recording, rather than a recovery of an original stereo mix.

Old recordings

Give mono songs, archival transfers, and older music recordings a new sense of instrumental space.

Mono concert takes

Try a mono recording of your concert. If the audience overwhelms the music, start with crowd noise removal. For hiss or other noise, look into music denoising before stereo conversion. Older musical styles remain the best fit.

Damaged mono audio

Reinterpret a recording that has lost its stereo image. Use audio restoration first if you also need to repair the sound. Stereoize itself changes the spatial mix.

Fix the stereo profile of your music

An uneven stereo mix can pull the music to one side or leave instruments crowded together. Upload it to try a more balanced placement. Stereoize mixes the recording to mono first, then builds a new stereo mix.

Need more control over the stereo mix?

Use the Make Songs Wider pipeline to widen selected parts of a song with editable controls. For maximum control, use stem splitting and adjust each instrument's pan, level, and stereo width yourself. These are better starting points for modern music.

Hear your mono recording in stereo

Upload an older mono song, run Stereoize in Enhance, and download the new stereo version.