About X-Minus
X-Minus (x-minus.pro/ai) is a browser-based vocal remover and AI stem splitter that separates songs into vocals, instrumentals, drums, bass, and other stems. It offers a free tier with 18 minutes of daily processing (7-minute track limit, 60MB cap) and paid plans ranging from $2.48/month (Lite+) to $18.30/month (Ultimate) with higher limits. The platform also doubles as a karaoke maker with a library of 700,000+ pre-made accompaniments and includes pitch/tempo adjustment tools, making it a convenient instrumental extractor for casual karaoke enthusiasts and hobbyist remixers rather than professional audio engineers.
Best for: Karaoke enthusiasts who want quick, no-install vocal removal and access to a massive pre-built accompaniment library, and hobbyist musicians or DJs who need affordable, occasional stem separation for remixes and practice tracks.
“X-Minus is a capable and affordable browser-based vocal remover and instrumental extractor that excels as a karaoke tool and casual stem separator, with its massive 700,000+ track library being a standout feature. However, audio quality limitations and restrictive processing caps even on paid plans make it better suited for hobbyists than professionals who need pristine separation quality.”
What is X-Minus?
Overview
X-Minus is a web-based music separator and vocal remover that has carved out a niche in the audio separation space, primarily serving karaoke enthusiasts and casual music producers. The platform runs entirely in the browser, no software downloads required, and uses AI stem splitter algorithms to separate uploaded audio files into individual stems including vocals, instrumentals, drums, bass, and other instruments. Beyond stem separation, X-Minus doubles as a karaoke maker with a library of over 700,000 pre-made accompaniment tracks spanning virtually every genre and era.
The tool is operated from x-minus.pro and has been around for several years, building a loyal user base among karaoke communities and hobbyist musicians. Its straightforward interface makes it accessible to users with no technical audio knowledge, though this simplicity comes at the cost of advanced features that professionals might expect.
Key Capabilities
At its core, X-Minus functions as an instrumental extractor and AI stem splitter. Users upload an audio file and the platform analyzes the spectrogram to isolate different frequency ranges associated with vocals, drums, bass, and other instruments. The platform offers multiple AI models, some optimized for vocal isolation, others for vocal removal, giving users flexibility depending on their specific needs.
Free (unregistered) users can process up to 18 minutes of audio per day with a 7-minute per-track limit and 60MB file size cap. They receive basic vocal-only extraction without access to multi-stem separation or lossless format support. Paid subscribers unlock WAV and FLAC output, multi-stem separation (vocals, drums, bass, other), YouTube link processing, and significantly higher processing allowances.
Additional features include real-time pitch and tempo adjustment, a built-in audio player, and the ability to create and manage playlists of separated tracks. The massive karaoke library of 700,000+ tracks provides an alternative to processing your own files, many popular songs already have pre-made instrumental versions available.
Pricing Analysis
X-Minus offers a tiered subscription model that caters to different usage levels:
- Free (Unregistered): $0, 18 minutes/day processing, 7-minute track limit, 60MB file size, vocals-only extraction, MP3 output only
- Lite+: $2.48/month, 450 minutes/week, 15-minute tracks, WAV/FLAC support, multi-stem separation
- Standard: $4.10/month, 750 minutes/week, 20-minute tracks, full AI model access
- Professional: $8.60/month, 1,800 minutes/week, 25-minute tracks, priority processing
- Ultimate: $18.30/month, 5,500 minutes/day, 28-minute tracks (2 stems) or 25 minutes (4 stems), highest quality output
The pricing is notably affordable compared to competitors like LALAL.AI (which charges $15/month for its Lite plan) and Moises ($3.99/month starter). However, the per-week processing caps even on paid tiers can feel restrictive for power users. The free tier is functional for quick one-off tasks but the 7-minute track limit and MP3-only output are significant constraints.
Who Should Use This
X-Minus is ideal for karaoke enthusiasts looking for a karaoke maker who want to quickly create instrumental versions of their favorite songs without installing desktop software. The massive pre-built karaoke library is a genuine differentiator, before processing your own file, check if an accompaniment already exists. Hobbyist musicians and DJs who need occasional stem separation for mashups, remixes, or practice tracks will find the Standard or Professional plans sufficient.
However, professional audio engineers, music producers, and anyone requiring a pristine music separator with studio-grade quality should look elsewhere. The output quality, while adequate for casual use, shows noticeable artifacts on complex mixes, particularly with whispered vocals, heavily layered arrangements, and tracks with significant reverb. Professionals would be better served by LALAL.AI, iZotope RX, or Moises, which offer superior AI models and higher-fidelity output.
The Bottom Line
X-Minus occupies a practical middle ground in the AI vocal removal space: it is affordable, requires no installation, and gets the job done for casual use cases. The 700,000+ karaoke library and pitch/tempo tools add genuine value beyond basic stem separation. But its processing limits, variable output quality on complex tracks, and lack of advanced features like sample rate adjustment or batch processing keep it firmly in the consumer-hobbyist category. For quick karaoke prep or simple vocal isolation, X-Minus delivers solid value, just do not expect studio-grade results.
Pros
- Completely browser-based with no software installation required, works on any device with internet access
- Affordable pricing starting at $2.48/month, significantly cheaper than competitors like LALAL.AI ($15/month)
- Massive library of 700,000+ pre-made karaoke accompaniments saves processing time for popular songs
- Multiple AI models available for different separation tasks, optimized options for vocal isolation vs. vocal removal
- Built-in pitch and tempo adjustment tools add extra utility for karaoke practice and DJ work
Cons
- Output quality is inconsistent on complex mixes, struggles with whispered vocals, heavy reverb, and layered arrangements
- Free tier is heavily restricted: 7-minute track limit, 60MB cap, MP3-only output, and no multi-stem separation
- Processing time caps apply even on paid plans (weekly limits on Standard/Professional), which can frustrate power users
- Does not support sample rate adjustment, and exported audio quality may degrade compared to the original file
How to Use X-Minus
- 1Visit the X-Minus AI page
Navigate to x-minus.pro/ai in any web browser. The tool works entirely online with no software installation or account registration required for basic use.
- 2Upload your audio file
Click the file selection button and upload your audio track. Free users can upload MP3 files up to 60MB and 7 minutes long. Paid subscribers can upload WAV and FLAC files with higher size and duration limits.
- 3Choose your separation type
Select the desired output: basic vocal/instrumental separation (available free) or full multi-stem separation into vocals, drums, bass, and other instruments (requires a paid subscription).
- 4Wait for AI processing
The AI engine analyzes the audio spectrogram to identify and separate different frequency ranges. Processing typically takes 30 seconds to a few minutes depending on track length and server load.
- 5Preview and adjust
Listen to each separated stem in the built-in browser player. Use the pitch and tempo adjustment controls to modify playback speed or key for karaoke practice or remix preparation.
- 6Download your stems
Download all separated tracks at once or individually. Free users receive MP3 exports while paid subscribers can download in lossless WAV or FLAC format for higher quality output.
Key Features of X-Minus
Core
Separate vocals from instrumentals using AI-powered spectrogram analysis.
Isolate vocals, drums, bass, and other instruments into individual tracks.
Access 700,000+ pre-made karaoke accompaniment tracks spanning every genre and era.
Paste YouTube links directly for vocal removal without downloading the video first.
Process audio entirely in the browser with no software installation required.
Preview separated tracks directly in the browser with playlist management capabilities.
AI Features
Choose from models optimized for vocal isolation or vocal removal depending on your needs.
Editing
Change the pitch of separated tracks in real time for karaoke practice or remix preparation.
Modify playback speed of audio tracks without affecting pitch quality.
Export
Export separated stems in WAV and FLAC formats for higher quality output.
Key Specifications
| Attribute | X-Minus |
|---|---|
| Free Tier | |
| API Access | |
| Platform Support | Web |
| AI Powered | |
| Offline Capable | |
| Batch Processing | |
| Max Stems | 4 |
| Lossless Export |
Use Cases
- Creating karaoke instrumentals by removing vocals.
- Extracting vocals for mashups and remixes.
- Isolating drums or guitar for practice sessions.
- Producing acapella tracks for vocal training.
- Adjusting tempo and pitch for dance or music rehearsals.
Integrations
Media Platform
Limitations
Output quality degrades noticeably on complex mixes with layered vocals, whispers, or heavy effects, and even paid plans impose weekly or daily processing caps that limit high-volume use. Lack of batch processing, no sample rate control, and limited export format options on the free tier further constrain professional workflows.
