SurStudio

SurStudio is a free, browser-based audio toolkit designed to help users separate vocals from music, create instrumental backing tracks, record voice performances and perform everyday audio-editing tasks. It brings several music and audio utilities together in one website, allowing users to work with local audio files without installing a dedicated desktop application or creating an account for its public tools.

One of SurStudio’s main features is its AI Vocal Remover, which separates a mixed recording into vocal and instrumental outputs. This is useful for people who want to create karaoke backing tracks, practise singing, isolate vocals for permitted creative projects or examine different elements of a song. After processing, users can preview the separated audio and download the vocal and instrumental results as WAV files.

SurStudio provides multiple separation methods, including Fast AI, Quality AI and Basic Stereo. Fast AI is intended for users who want to process audio more quickly, while Quality AI offers an alternative for recordings that need a different balance between vocal reduction and instrumental detail. Basic Stereo uses differences between the left and right audio channels rather than an AI separation model. Comparing the available methods can help users choose the most useful result for a particular recording.

The platform also includes tools for extracting audio from video files, converting audio between supported formats, cutting recordings and joining multiple tracks. The Video Vocal Remover can extract a soundtrack from a local video and help separate its vocals from the instrumental. Users can download the resulting audio or, where supported, create a video file with the selected audio output. These features make SurStudio useful for basic audio preparation without requiring users to switch between several separate websites.

Another component is Mini Studio, a browser-based audio workspace that supports recording and working with multiple tracks. Users can open separated audio in the studio, import backing tracks, record voice takes and arrange audio for a simple performance or practice session. The website also provides a voice recorder and karaoke-oriented recording workflow, allowing users to rehearse over backing music and save their recordings locally.

SurStudio is designed to work directly in a modern web browser on desktop and mobile devices. Processing takes place on the user’s device, and the AI models are downloaded when needed. This approach means that the original audio is not uploaded to a remote server for the site’s separation processing. It can be beneficial for users who prefer to keep recordings on their own devices, although performance depends on the device’s processing power, memory and browser compatibility.

The public audio tools are free to use without a subscription or account. However, users still need a compatible browser and enough available memory to process their recordings. Larger files and longer tracks can take more time, particularly on mobile devices. SurStudio supports files up to 250 MB and 30 minutes for its vocal-removal workflow, although practical performance may vary depending on the device and audio format.

The platform is suitable for singers, musicians, students, content creators and people who need straightforward audio utilities. Singers can use instrumental outputs for practice, musicians can inspect vocal and backing components, and creators can prepare audio for projects in external video or audio editors. The tools can also help users convert, trim or combine recordings before using them elsewhere.

Although SurStudio offers several convenient functions, AI separation cannot perfectly reconstruct every original recording. Vocal reverb, background harmonies and instruments that overlap with the vocal range may remain in the instrumental output or appear in both separated tracks. Users should listen to the results before using them in a finished project. The website also does not provide a complete video-editing suite, automatic lyric synchronisation or a dedicated native mobile application.

Overall, SurStudio is a practical option for people who want free audio-processing tools in one browser-based workspace. Its combination of vocal removal, audio extraction, format conversion, recording and basic multitrack editing makes it useful for everyday music and audio tasks without requiring a paid subscription.

Pricing

SurStudio’s public audio tools are free to use. Users do not need to purchase a subscription, create an account or pay for a Pro version to access the advertised vocal-removal and audio utilities.

• Free plan — $0: Access to the public browser-based audio tools, including vocal separation, audio conversion, recording and supported editing functions.

• Free trial: Not applicable; the public tools are available without a paid trial.

• Paid plans: No paid subscription tier publicly listed for the current public audio tools.

Review

SurStudio is a useful browser-based audio toolkit for users who want to separate vocals, prepare backing tracks, record audio or perform simple editing tasks without installing desktop software. Its strongest advantage is the combination of several utilities in one place, making it convenient for quick projects and everyday audio work.

The AI Vocal Remover is particularly useful for creating instrumental versions of songs or extracting vocal parts for practice and permitted creative projects. Having Fast AI, Quality AI and Basic Stereo options gives users alternatives when one method does not produce a satisfactory result. The ability to preview outputs before downloading also helps users compare the balance between vocal reduction and retained instrumental detail.

The additional audio tools make the platform more versatile. Users can extract soundtracks from local video files, convert supported audio formats, cut recordings, join tracks and record voice performances. Mini Studio extends these capabilities by allowing users to work with backing tracks and microphone recordings in a browser-based workspace.

Another major advantage is the pricing. The public tools are free, require no account and do not impose a subscription fee. Processing audio locally also means that recordings do not need to be uploaded to a remote processing server for the site’s core audio operations. This may appeal to users who value privacy and want to keep their files on their own devices.

However, SurStudio has limitations. AI vocal separation is an estimation process, so it cannot guarantee completely clean vocals or instrumentals for every song. Dense mixes, reverb and overlapping sounds can affect the results. Processing speed also depends on the user’s hardware, and large recordings may require substantial memory. The platform is best suited to straightforward audio tasks rather than advanced professional production or comprehensive video editing.

Verdict: SurStudio is a strong free option for basic audio processing, vocal separation and recording. Its broad set of browser-based tools, lack of subscription fees and local processing approach make it convenient for casual users and creators. Its main drawbacks are variable separation quality and reliance on the user’s device for processing.