STEP 01
Drop a mix or stems
Single Clean for WAV/MP3, or Stem Remixer for a Suno stems folder, ZIP, or local htdemucs separate.
Subtrakt
Adaptive spectral denoise, Tone, stem-aware mastering, and Release Ready loudness, processed offline on your Mac (macOS 14, Apple Silicon).
14-day trial · preview and A/B unlocked · export locked until licensed · then $79 one-time · free 1.x updates.
Three steps to a cleaner master
STEP 02
Shape the rack
Flip modules between simple and control-room. Set Clean, Tone, Release Ready, then Preview with A/B.
STEP 03
Export and recall
PCM_24 WAV (optional MP3), HTML report, and a .subtrakt.json sidecar for identical recall.
Four modules. Shared metal. Quiet accents.
Flippable DSP on one graphite chassis. Accents only on stripes, arcs, and LEDs.
Adaptive spectral denoise and AI Clean
Linked-stereo STFT denoise (Bass Hz 350, Strength 0.9). Optional AI Clean uses htdemucs stems as masks on the original mix.
Strength · Bass Hz · Quiet · AI Clean · strength 0…1
Warmth, vocal level, low end
Adaptive body below ~1.5 kHz, vocal level −3…+3 dB, adaptive low-end when the bottom is muddy.
Warmth · Vocal level · Low end
Release Ready and source-aware
Trim, LUFS, 8× true-peak limiter, ~3 ms de-click. Streaming −14 / −1.0 dBTP. Optional source-aware masks.
Loudness · True peak · Clean edges · Source-aware
Stem remix and masks
Rebuild from Suno stems. Core ML FP32 htdemucs. For AI Clean / Tone / source-aware, stems are masks only.
Mixer · Delay · HPF · Mud · Vocal Balance · Limit
Flip a module: front vs technical back
Clean · front
Strength0.90Bass Hz350Flip to control roomClean · control roomn_fft 2048 · hop 512 · Hann
quiet fraction 0.05 · shelf 3 / 5 dB
AI Clean TF masks · linked stereo
reconstruction check −60 dB
Show front
Clean · front
Strength0.90
Bass Hz350
Clean · control room
n_fft 2048 · hop 512 · Hann
quiet fraction 0.05 · shelf 3 / 5 dB
AI Clean TF masks · linked stereo
reconstruction check −60 dB
Illustrative UI · front / back flip
Meters, removed noise, A/B
Preview like tape. Meter like a rack. Spectrum after every render.
- Pro meters
Integrated / short-term / momentary LUFS, LRA, true peak, gain reduction, stereo correlation and width, per-stem levels.
- Listen to removed
Debug output can write a Removed Noise WAV so you can hear only what was subtracted.
- A/B comparison
Tape-machine Preview with A·B and optional level-matched playback. Matching never changes the export.
- Before / after spectrum
1/6-octave overlay after a render, with last-process readouts in the Meters module.
Meter bay
Peak
Illustrative UI · analog VU style · not a live meter
HTML processing report
English or Norwegian bokmål. Steps, real parameters, loudness bars, honest AI-provenance note.
Settings sidecar
.subtrakt.json beside the export. Load it later, or drop it on the queue for identical DSP recall.
Honest about AI provenance
Subtrakt does not hide AI provenance and does not remove watermarks. It is about sound quality and release loudness, not disguising origin.
One-time license. Hear everything in the trial.
macOS on Apple Silicon only (macOS 14+).
Subtrakt 1.x
$59$79
Launch price for about 4–6 weeks, then $79 one-time.
- Full app during 14-day trial (export locked until licensed) until licensed
- Free updates within 1.x
- 2.0 upgrade at $39
- Standard now · Pro coming later
14-day free trial
$0
Preview, play, and A/B. Only export is locked until you buy or the trial ends.
- No credit card for the trial clock
- After expiry: open and preview still work
- Offline Ed25519 license token