Refine Suno tracks. Studio audio quality.

The "before" track cuts off low — that's where the lossy compression threw away high-frequency detail. Enhanced rebuilds it across the full band almost instantly. Switch on AI-artifact cleanup and the faint high-frequency haze is removed before that rebuild. Add Finalize and the result comes back mastered — glued, widened, and loud enough to sit next to streamed music.

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 weren't built for this. We were.

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

Pricing

Free to start. $9/mo when you need more.

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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Enhanced is the fast preset — it runs in seconds and restores most of the high-frequency detail that lossy compression discards. It's what we recommend for most tracks. Flow Matching takes about ten minutes and reconstructs the finest detail (cymbals, breath, reverb tails) using diffusion. Costs 3 credits on Normal quality or 4 on High.

Can The Refiner master my track?

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Yes — Finalize is our automated mastering stage (Pro). Flip it on with any full-track refinement preset, 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, at a −9 LUFS release target. On refinement jobs — Enhanced, Restoration, Flow Matching, or AI Artifacts — 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 and WAV. Tracks can be up to 8 minutes long. Outputs are 44.1 or 48 kHz WAV at 24-bit (32-bit float is available on Pro and Studio for Flow Matching, useful if you're feeding the result back into a DAW for further mixing).

How long does a refinement take?

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Enhanced typically completes in 10–30 seconds. Flow Matching takes around 6–12 minutes depending on quality setting and track length; enabling AI artifact removal adds a cleaning stage of roughly the track's length before refinement, and Finalize adds about 30 seconds of mastering at the end. 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. The free tier gives you a small number of credits each month to try the service. Paid plans (Hobby, Pro, Studio) and one-time credit packs are available if you need more.

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.

Can The Refiner detect AI-generated music?

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Yes — there's a built-in AI detector (the Detect AI tab) that scores how likely a track is AI-generated, 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.