Refine Suno tracks. Studio audio quality.

How it works

Built for AI-generated music, end to end

AI tracks have a specific shape of damage: high-frequency rolloff, compression haze, and the spectral fingerprint the neural decoder bakes in. Generic audio restorers were not built for this. We were.

2 tracks minimum to balance · 100 maximum · no extra credit for the final balance pass

Pro feature · 3 credits per split, any engine · Free users get one lifetime trial split to try it.

Pricing

Join the private beta waitlist. Invited, verified accounts start with 5 credits and 30 days of Pro features.

What is The Refiner?

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The Refiner is a web app that cleans up and upgrades audio tracks. It works on anything — AI-generated music from Suno or Udio, demos, podcast recordings, old mp3s, live captures — drop in a lossy or low-fidelity file and get back a release-ready WAV with restored high-frequency detail, better clarity, and a more polished sound. An optional Finalize stage masters the result to release loudness, so it can sit next to streamed music.

What's the difference between Enhanced and Flow Matching?

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Both use trained audio models, not just filters. Enhanced uses GPU-powered neural restoration to synthesize high-frequency detail and is our recommended default. Flow Matching uses compute-intensive, iterative reconstruction, with Normal and High processing depths. Both generate plausible detail rather than recover an original master, so texture and timbre can change; more compute does not guarantee a better result. Flow Matching is temporarily unavailable while we review output quality, so use Enhanced for new refinements.

Can The Refiner master my track?

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Yes — Finalize is our automated mastering stage, available on Hobby, Pro, and Studio. Flip it on with Enhanced, or run it standalone on a track that's already mixed: corrective EQ, glue compression, valve-triode and transformer harmonic saturation, stereo polish with a mono-safe low end, and a true-peak limiter. The loudness target is selectable — −9 LUFS by default, with −7, −14, and −16 options — with harmonics from Off to Standard to Hot and optional reference matching: upload a track or pick a factory or saved preset. A free 10-second reference preview auditions the selected reference's tonal shape; with Reference Off it plays the original excerpt. It does not render the Strength, loudness, or Harmonics controls. Flow Matching integration is temporarily unavailable. The mastered version is the default download and the pre-master stays available as a second file. It won't replace a mastering engineer on a commercial release, but it lifts an AI export to a level that holds up next to streamed music.

What audio formats can I upload?

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MP3, WAV, or FLAC. Tracks can be up to 8 minutes long. Current outputs are 44.1 or 48 kHz WAV at 24-bit. The Flow Matching-only 32-bit float option is temporarily unavailable with that preset.

How long does a refinement take?

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Timing depends on track length, the stages you select, queue demand, and worker startup. Enhanced is the shortest path; AI artifact removal adds a cleaning stage that can take roughly the track's length, and Finalize adds a mastering stage. The recommended Enhanced + cleanup + Finalize workflow can take several minutes. Flow Matching is temporarily unavailable. You'll see live progress in the dashboard and can keep working while jobs run.

Do I need a subscription?

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No. New verified accounts get 5 welcome credits and 30 days of Pro feature access, then the account uses its chosen plan. Free provides 2 credits each month for Enhanced. Hobby, Pro, and Studio add monthly credits and plan features. A one-time Credit Pack adds credits but does not change your plan or unlock features outside it.

Can I split a track into stems?

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Yes — stem separation is a Pro feature. Drop a track on the Stems page and pick an engine: Demucs (fast 4-stem classic), Melband (newer transformer, cleaner separation), or Voice Cleanup (speech vs. background, great for podcasts and interviews). Output is one WAV per stem plus a ZIP of all of them. 3 credits per split. Free users get one lifetime trial split to try it.

What is Rebalance stems?

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Rebalance is an optional Pro and Studio stage for Enhanced jobs with AI artifact removal. The job pauses before the final mix so you can audition the cleaned vocals, drums, bass, and other together, adjust their relative levels, and add curated convolution reverb to the vocal. Low cut removes lows from the wet reverb return; High cut softens its top end; the dry vocal is unchanged. Render final mix resumes processing. Humanizer, when selected, runs next; Finalize mastering, when selected, runs last. Rebalance adds no extra credit, does not create downloadable stem files, and deletes its private working stems and previews after final rendering.

Can The Refiner detect AI-generated music?

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Yes — open Detect AI from the main navigation to check a track separately from refinement, free and without spending a credit. It detects both Suno and Udio and tells you which one, and reliably separates them from human recordings. Support for more generators is on the way. It's a guidance tool, not a verdict — a low score means no AI signals were detected, not proof of human authorship, and no detector is 100% accurate, so please don't use the scores to make accusations.