Extract Stems

Extract Stems is a browser-based audio separation tool for recordings you own or are authorized to process. Upload an MP3, WAV, FLAC, M4A, or OGG file, choose 2, 4, or 6 stems, and process up to 10 minutes of audio. Results can be previewed in the browser and downloaded individually or as a ZIP in MP3, WAV, or FLAC. Verified accounts receive five free processing minutes once. Additional processing time is sold as one-time prepaid minute packs with no recurring subscription and no expiration on purchased minutes.

Extract Stems is an AI-powered music separation tool offered by ACE Studio under its Stem Splitter feature. It helps musicians, music producers, vocalists, remix artists, DJs, and other audio creators separate a mixed music track into individual components, known as stems. Instead of working with a finished song as one combined audio file, users can extract vocals, drums, bass, and instrumental elements for more flexible editing and production.

The tool is designed to simplify a task that traditionally requires specialized audio-processing software and considerable manual work. A completed song usually contains several sound sources mixed together, including lead vocals, percussion, bass, keyboards, guitars, synthesizers, and background effects. Extract Stems uses AI-based separation to identify and isolate these elements, allowing users to work with selected parts of a recording without rebuilding the entire arrangement from scratch.

One of its main uses is vocal isolation. Users can separate the vocal performance from the instrumental backing to prepare practice tracks, vocal references, or mixes for further editing. The reverse workflow is also useful: extracting the instrumental portion can help users prepare accompaniment for singing practice or other authorized music projects. The quality of the separation depends on the source recording, and some vocal or instrumental residue may remain.

Extract Stems also supports more detailed separation for users who need individual musical components. Depending on the selected mode, ACE Studio’s Stem Splitter can separate a track into vocals and instrumental audio, divide it into vocals, drums, bass, and other instruments, or use an advanced mode to identify additional stems. The professional separation mode also identifies categories such as piano and guitar. This gives producers greater control over the elements they want to retain, remove, remix, or process independently.

Another useful feature is vocal cleanup. Supported modes offer options to remove reverb and backing vocals from the extracted vocal track. These options can help users obtain a more focused vocal stem for editing or further production. However, they cannot guarantee a completely isolated lead vocal in every recording, especially when the original mix contains overlapping voices, heavy effects, or instruments occupying similar frequencies.

The tool provides a browser-based demonstration, allowing users to try stem separation without installing the desktop application. For more extensive use, Stem Splitter is also integrated into the ACE Studio desktop environment. Within the application, users can select an audio region, open the Stem Splitter panel, choose a separation mode, and start processing. The resulting stems appear as separate tracks that can be edited within the project.

ACE Studio’s workflow allows extracted stems to be used alongside other supported music-production features. Users can adjust individual tracks, apply effects, rearrange musical sections, and prepare audio for export. This integration is valuable for producers who want to continue editing after separation rather than repeatedly moving between unrelated applications. The original track can remain available for comparison while users work with the separated material.

The service supports common audio formats, including MP3, WAV, and FLAC, according to its product information. This reduces the need to convert files before beginning a project. Processing speed varies with the length and complexity of a recording, although ACE Studio states that many standard-length tracks can be separated within seconds. Actual performance and output quality may vary.

Extract Stems can support several creative workflows. Musicians can prepare backing tracks, producers can create remixes, DJs can isolate elements for live sets, and sound designers can extract musical components for use in other compositions. Educators and students can also use separated stems to study musical arrangements, compare instrument parts, and examine how different layers contribute to a finished recording.

The browser tool uses a credit-based system for certain separation options, while the full ACE Studio application provides access through its membership plans and monthly credit allowances. The precise cost depends on the separation mode and the user’s account or subscription. A basic vocal-and-instrumental split may use fewer resources than advanced separation, which attempts to identify more individual components.

Users should also consider copyright and licensing when working with extracted audio. Separating a song does not remove the copyright restrictions attached to the original recording or composition. Commercial releases, public distribution, and other uses of material from third-party recordings may require permission. The tool is most straightforward to use with original recordings or audio that the user is authorized to edit.

Overall, Extract Stems is a useful option for people who need to separate musical components from a finished recording. Its combination of browser-based access, several separation modes, vocal-cleanup options, and integration with ACE Studio makes it suitable for remix preparation, vocal practice, music analysis, and audio production. Its main limitation is that AI separation is not always perfect, and ongoing use of advanced features may require paid credits or an eligible membership.

Pricing

Extract Stems is available through a free browser demonstration and ACE Studio’s paid membership plans.

• Free access: One browser-based trial separation is available without installation. An account may be required for continued access.

• ACE Studio Artist: Listed at $16.58 per month with annual billing under the rent-to-own offer, or $20.73 monthly equivalent at the displayed regular annual price.

• ACE Studio Artist Pro: Listed at $22 per month with annual billing under the rent-to-own offer, or $27.50 monthly equivalent at the displayed regular annual price.

• Credit usage: The web splitter lists options costing 5 credits for vocal-and-instrumental separation and 10 credits for vocals, drums, bass, and instruments. Credit requirements differ by mode and platform.

• Enterprise: Team plans are available with centralized billing and administration.

Prices and credit allowances may change. The subscription prices apply to ACE Studio memberships, not a separately priced Extract Stems subscription.

Review

Extract Stems is a practical music-production tool for users who need to isolate vocals and instruments from finished recordings. Its different separation modes provide flexibility, while the vocal-cleanup options and integration with ACE Studio make it useful for continuing production after the initial separation.

The browser demonstration is convenient for testing the feature, and support for common audio formats reduces preparation work. The main limitations are the possibility of imperfect separation and the credit or membership requirements associated with continued use and advanced features.

Verdict: A worthwhile option for music producers, remix artists, vocalists, and audio creators who need fast stem separation within an established music-production workflow.