Pull the bass line out of any track to get a clean bass stem — or remove it for a bassless mix. AI-powered and 100% private in your browser.
Open the Stem Splitter
Go to the DefyAudio Studio and select the Split stems tool.
Upload your song
Add any MP3, WAV, FLAC or other audio file. The AI model loads once, then runs fully on your device.
Choose 4-stem mode
Pick 4-stem separation to split the track into vocals, drums, bass and other instruments.
Separate
The on-device AI isolates the bass from the rest of the mix — no upload, no server.
Download the bass stem
Grab the isolated bass track as a WAV — or use the other stems for a bassless mix.
Isolated bass track
Get a clean bass stem for transcription, practice or remixing.
Or go bassless
Keep vocals, drums and other while dropping the bass for a bassless backing.
On-device AI
HTDemucs runs locally in your browser — no cloud, no upload, full privacy.
WAV export
Download studio-quality WAV stems ready for your DAW.
Isolating the bass gives you a clean low-end stem you can transcribe, practice along to, or rework in a remix. DefyAudio uses HTDemucs — a state-of-the-art AI source-separation model — running entirely on your device, so even copyrighted music stays private.
Because separation is AI-based, it pulls the bass out of a full stereo mix rather than relying on a crude low-pass filter. Use 4-stem mode to keep the bass stem, or discard it and keep the others for a bassless version.
Upload the song to DefyAudio's Stem Splitter, choose 4-stem mode, and download the bass stem — free, with no upload.
Yes. 4-stem mode gives you every stem separately, so you can keep vocals, drums and other instruments and leave out the bass for a bassless mix.
Yes — AI separation isolates the actual bass instrument across the frequency range, rather than just cutting low frequencies which also affects kick drums and other instruments.
No — the AI runs locally in your browser, so your music stays on your device.