00 · Arrival 00:00.00

You have brought us a record.

Signal analysis precedes processing.

Velnor is a 32-stage deterministic mastering engine. Every stage has evidence. Every decision leaves a trace. Scroll, and watch it work.

Velnor application – drop zone, ready to receive a track
Master view – analysis complete, ready to master
Visual analytics panel – spectrum, dynamics and codec tabs
Album mode – track list with analysis complete
Profiles manager – list view with custom profiles
01 · Listen 00:04.12
Stage 01 → 03 · Input conditioning

First, the signal arrives.

DC offset removed. Stray sub-audible energy swept. Gain staged to a known operating point. Only then do we begin to read what you have actually made.

  • DC filter 20 Hz high-pass, 1st order
  • Noise defense Inaudible-floor removal
  • Gain stage Reference to −18 dBFS RMS
input−3.1 dBFS
rms−14.8 dB
dc−0.0021
sr48 000 Hz
ch2 / stereo
02 · Analyse 00:08.40
Stage 04 → 07 · Spatial, spectrum, adaptive scaling

We measure before we move.

The engine pulls twenty-seven metrics from your mix before a single gain stage fires. Not to impress you. To know, before any processing occurs, what it is actually looking at.

Crest factor 13.2 dB healthy transient reserve
Integrated −11.4 LUFS hot, but within codec headroom
Stereo correlation 0.71 mono-safe, mildly narrow
Kick fundamental 53 Hz anchor for low-band crossover
Spectral tilt +1.8 dB/oct brighter than genre centre
LRA 7.9 LU dynamic, not over-compressed
True peak −0.4 dBTP hot, needs codec headroom
M / S ratio 0.62 / 0.38 mid-led, no phantom side
03 · Confidence 00:12.61
Stage 08 · compute_confidence()

Nine dimensions calibrate processing depth.

Every stage in the chain is gated by a weighted confidence score. On a clean mix, most of the engine quietly does nothing. When the evidence is strong, it acts at full depth. When it is ambiguous, it preserves.

≥ 0.75Full adapted depth
≥ 0.50~75 % depth
≥ 0.30~40 % depth, cautious
< 0.30~15 % depth, preserve
Genre certainty0.00
Archetype match0.00
Spectral certainty0.00
Dynamic certainty0.00
Transient clarity0.00
Tonal stability0.00
Stereo integrity0.00
Noise floor0.00
Low-end integrity0.00
Global confidence 0.00 computing…
04 · Low-band anchor 00:17.03
Stage 10 · 12 · ParametricEQ, MultibandCompressor

Your kick decides where low ends.

Fixed-frequency crossovers split at the same place on every record. Velnor finds the kick fundamental and sets the low-band boundary around it, so the sub and the body never argue about phase.

Generic tool: split at 120 Hz, kick body cut in half Velnor: anchor at kick fundamental, body stays whole
05 · Masking suppression 00:21.40
Stage 17 · MaskingSuppressor · 24 Bark bands

Mud removed where it exists.
Warmth kept where it matters.

Twenty-four perceptually-spaced critical bands. Suppression fires only where real masking is present. Your low-mid warmth is not carved out on the way past.

passive band · no action < 0.8 dB suppression > 1.5 dB suppression · evidence-led
06 · Codec round-trip 00:26.84
Measured · same source · 256k AAC encode

What survives the encoder.

A PCM master can reconstruct above its ceiling after AAC encoding, even when the limiter reading looked safe. The same source file was put through a 256k AAC round-trip and the decoded output was checked against a −0.2 dBTP hardware safety ceiling.

LANDR's Balanced/Medium preset targeted −11.3 LUFS; Velnor's streaming preset targets −14 LUFS, in line with platform normalisation. Both outputs were checked at the same −0.2 dBTP hardware ceiling.

LANDR · Balanced / Medium
AAC recon: +1.12 dBTP
Velnor · Pop preset
AAC recon: −0.20 dBTP
07 · How it's built in 00:31.18
Stage 23 · 24 · 29 · Clipper A · Clipper B · True Peak Limiter

A delivery-aware ceiling, with the check inside.

Velnor sets its limiter ceiling based on the target platform, then runs a simulated AAC encode internally. If the reconstructed peak crosses the safety gate, the chain corrects before the file is written.

True peak delivery-aware limiter ceiling
−1.06 dBTP
Integrated loudness requested delivery profile
−14.0 LUFS
Simulated AAC pass checked against delivery gate
pass · 0 overs
08 · The ledger 00:38.02
Every stage, in order, as it fires.

Thirty-two stages. Every one accountable.

Nothing is hidden, nothing is inferred. Thirty fire on every master. Two stay dormant until you ask for them. This is the actual chain.

  1. 01DC FilterRemove sub-audible DC biasauto
  2. 02Noise DefenseSuppress inaudible-floor noiseauto
  3. 03Gain StageSet known operating pointauto
  4. 04Spatial AnalyserStereo correlation, M/S ratio, imageauto
  5. 05Spectrum AnalyserPer-band energy, tilt, centroidauto
  6. 06Spectrum LevellerGlobal broadband flatten to referenceauto
  7. 07Adaptive ScalingRule weights against genre profileauto
  8. 08Confidence System10-component score · gates every stageauto
  9. 09Spectral MatchDeviation converted to EQ bandsauto
  10. 10Parametric EQSurgical correction, kick-anchoredauto
  11. 11Parallel Harmonic VCAPhase-correct harmonic densityauto
  12. 12Multiband CompressorPer-band dynamics, kick-anchored splitsauto
  13. 13Transient ShaperAttack/sustain shaping per bandauto
  14. 14Stereo WidthTrue-stereo shuffler, mono-safeauto
  15. 15Mid / Side EQTonal shape separated from imageauto
  16. 16Dynamic CorrectionMacro-dynamic envelope repairauto
  17. 17Masking Suppressor24 Bark bands · evidence-led cutsauto
  18. 18Air & PresenceHigh-shelf lift, genre-awareauto
  19. 19Harmonic ExciterEven-harmonic warmth, restrainedauto
  20. De-esserSibilance control · cross-stage awareopt-in
  21. 21Output TrimPre-limiter gain stagingauto
  22. 22LUFS AnalysisPlatform-aware loudness targetingauto
  23. 23Clipper · Stage ATransient-preserved bulk shapingauto
  24. 24Clipper · Stage BSoft-clip peak tamer, LRA-adaptiveauto
  25. 25Sub-Stability GuardLow-end instability vetoauto
  26. 26Low-Band TamerSub resonance controlauto
  27. 27User Bass LiftGuarded low-shelf · user overrideopt-in
  28. 28Transient Integrity GuardPre-limiter snap protectionauto
  29. 29True Peak LimiterCodec-safe ceiling, 4× oversampledauto
  30. 30Budget ReportChain ledger · every move, evidencedauto
  31. 31Sample-rate ConversionTarget-aware, linear phaseauto
  32. 32DitherTPDF dither at bit-depth targetauto
32 stages · 30 fire by default · 2 are yours to turn on. The de-esser and the user bass lift wait for your call. The other thirty answer to the mix itself.
You have read what it does. Now hear it.

Hear the reel.

Six records, each one run through the live engine. Gain-matched, ready for a proper A/B, and waiting directly below.

The reel. Before and after, in your ears.

A small set of records, each one run through the live engine. A/B the original against the Velnor master. Gain-matched. Nothing cosmetic.

HEADPHONES RECOMMENDED · CLOSE A/B LISTENING
A ORIGINAL
B VELNOR MASTERED
INTEGRATED
LUFS
TRUE PEAK
dBFS
MATCH OFFSET
+0.00dB
Δ MASTER
+0.00LU
A
Original
Reference · as delivered
50 / 50
Velnor Mastered
32-stage deterministic
B
HOLD A DRAG · ←/→ KEYS · SPACE TO PLAY HOLD B
1 / 6

Trust and safety, built in.

Before each release ships, the engine is run through the current validation suite. Limiter compliance, chain safety, deterministic output, rule-path regressions. The numbers below are refreshed against the current engine.

Latest validation Loading…
Validation checks --
True peak overs --
Mono fold-down issues --
Non-finite audio output --
Deterministic output --
Validation details
Loading validation detail…

One payment, or we trust you to renew. Nothing in between.

No DRM. No update lockouts. No renders-per-month. You own the binary on your machine.

Personal

£20 / forever ?Velnor is built for artists who care about their sound. £20 represents the baseline for a generic one-off master elsewhere – here it gets you the full engine forever.
  • Unlimited mastering sessions
  • All 28 built-in genre profiles
  • Full session mastering modes
  • Lifetime updates
  • Release your own music commercially
  • Mastering for other artists or clients
Get Personal Licence

One payment. No renewal. Yours forever.

Professional

£49 / year
  • Everything in Personal
  • Master for clients & other artists
  • Commercial delivery to third parties
  • Freelance & session engineer use
  • Multi-seat studio deployment
Get Professional Licence

We simply trust you to renew while you're earning from it.

Studio

Studio

£149 / year
  • Everything in Professional
  • Multi-seat – whole studio team
  • Commercial facility & label use
  • Priority support
Get Studio Licence

We simply trust you to renew while you're earning from it.

Education

Campus-wide access (Mac)

£599 / year

301–1000 students

Initial institutional rollout limited to ensure onboarding quality.

  • Campus-wide install on institutional Macs
  • Unlimited local mastering (no render caps)
  • Offline operation (no uploads)
  • Student commercial release rights
  • Not licensed for third-party client mastering
  • Instructor documentation
  • Priority support (Medium +)
  • Dedicated onboarding call (Large)

Questions we have been asked.

Direct answers. No hedging.

My last auto-master sounded over-compressed and bright. Why would this be different?

Because most tools apply the same processing to every track. Velnor measures your specific mix, its genre, dynamics, and spectral balance, and only corrects what's actually off. If your high end is already right, it remains unprocessed. If your dynamics are healthy, it backs off. The chain has hard ceilings on how much it can modify, so it physically cannot over-process a well-mixed track.

Do I need to know anything about mastering to use this?

No. Drop your mix in, pick your genre and delivery target, hit master. Velnor applies a data-driven profile built from real releases in that genre. If you do know what you're doing, the full console gives you visibility into every decision the engine made, and why.

What if it makes my track sound worse?

The A/B comparison is built into the app. You hear the original and the master side by side before you export anything. Nothing is committed until you choose to save. Velnor's confidence system deliberately scales back corrections on tracks that don't need them, so heavy-handed results are rare.

Is this only for electronic music?

No. Genre intelligence covers everything from cinematic orchestral to heavy metal to acoustic singer-songwriter. The processing adapts to the source. Kick-anchored crossovers mean nothing on a string quartet, so they don't fire.

Why is there no trial period?

Providing a trial would mean inserting audio watermarks or destructive interruptions into your masters to prevent abuse. We refuse to compromise the sanctity of your signal for any reason. Your music isn't a demo, it's your record, and we treat it that way from day zero.