SoundBoost
SoundBoost masters your track from a text prompt or Spotify reference in under a minute. Free preview, unlimited plan from $16/month or $48/year.
What is SoundBoost and how does it work?
SoundBoost is an online AI mastering service you steer with words. Type “wide stereo field with punchy kick”, or paste a Spotify link, and it returns a streaming-optimized master in under a minute. The service counts 426,000+ masterings, and I covered its prompt feature when it launched in my SoundBoost text-prompt mastering article.
How it works:
- Upload a WAV, MP3, FLAC, AAC, ALAC, or OGG file (up to 1.5 GB), no signup for the free preview.
- Pick 1 of 6 AI mastering engineers (Sophia for smoothness and clarity, Marcus for harder styles).
- Guide the master with a text prompt or paste a Spotify reference track.
- The engine applies EQ, compression, saturation, and loudness targeting for Spotify, Apple Music, YouTube Music, and Bandcamp.
- A/B the result, request revisions, and export as WAV, HD-WAV, or MP3.
It fits independent artists releasing regularly who can’t spend $50 to $200 per human-mastered track.
How much does SoundBoost cost?
SoundBoost sells 2 unlimited tiers, each with a monthly or annual option. The annual rate runs a promotional 75% off.
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | Free preview without signup, free stem splitter and vocal remover |
| Unlimited | $16/mo, or $48/yr ($4/mo) | Unlimited masters + stem splits, all FX, HD-WAV export, 15 revisions/track |
| Unlimited Plus | $24/mo, or $72/yr ($6/mo) | Adds bulk mastering, unlimited revisions, full-length previews, drum + piano + guitar stems, priority queue |
Pricing changes frequently, so verify current plans on the SoundBoost site.
At $48/year for unlimited masters, the math beats per-track services after 1 or 2 songs.
Does prompt-guided mastering work?
Yes, within limits. It replaces preset-picking with intent.
- Prompts describe outcomes (“warm vocal pop”, “festival energy”) and the engine translates them into a signal chain.
- Reference mastering from a Spotify link anchors the tone to a track you trust.
- A loudness analyzer checks streaming normalization targets, so your master doesn’t get turned down on Spotify.
- Each master is generated fresh, no fixed preset chains.
The trade-off is precision: you steer the direction, the AI makes the moves. Engineers who want to set the ceiling frequency themselves will want a plugin instead.
How does SoundBoost compare to LANDR and MasterChannel?
| SoundBoost | LANDR | |
|---|---|---|
| Starting price | $16/mo ($48/yr) | $4.17/mo annual (mastering plan) |
| Core use case | Prompt-guided mastering | Mastering + distribution suite |
| Key differentiator | Text prompts + Spotify reference | Bundled release services |
| Free tier | Free preview + stem splitter | Trial masters |
| Best for | Unlimited masters, cheap | Artists wanting one platform |
| SoundBoost | MasterChannel | |
|---|---|---|
| Starting price | $16/mo | $9.90/track or subscription |
| Core use case | Fast prompt mastering | Reference-grade AI mastering |
| Key differentiator | 6 engineer personas | Mastering quality focus |
| Free tier | Free preview | Free test master |
| Best for | Volume releases | Single flagship tracks |
Choose LANDR if you want mastering and distribution in 1 subscription. Choose MasterChannel for a premium single. Choose SoundBoost for unlimited prompt-guided masters at a low flat rate.
What are some use cases for SoundBoost?
- Weekly releases: unlimited masters make a single-a-month schedule affordable.
- Reference matching: paste the Spotify track your mix should sit next to.
- Acapellas and remixes: the free stem splitter I covered in my free stem splitter article pulls vocals, drums, bass, and instruments.
- Pre-release loudness checks: verify streaming normalization before distribution.
- Mastering on tour: the iOS and Android apps sync projects with the web version.
- Demo polishing: a fast master makes rough mixes pitchable to labels and sync.
Frequently asked questions
Is SoundBoost free?
The preview is free with no signup, and the stem splitter and vocal remover are free. Downloading full masters needs a paid plan, from $16/month or $48/year on Unlimited.
How much does SoundBoost cost per master?
Nothing per master: plans are unlimited. On the $48/year Unlimited plan, 50 masters a year work out to under $1 each.
What’s the difference between SoundBoost Unlimited and Unlimited Plus?
Unlimited ($16/mo) covers unlimited masters, stem splits, all FX, and 15 revisions per track. Unlimited Plus ($24/mo) adds bulk mastering, unlimited revisions, full-length previews, drum/piano/guitar stem separation, and a priority queue.
Which AI mastering engineer should I pick on SoundBoost?
Each of the 6 personas targets a different sound: Sophia leans smooth and clear, Marcus goes harder and louder. Run the same track through 2 or 3 with the free preview and keep the master that fits your genre.
Does SoundBoost train AI on my music?
No. SoundBoost states your masters are never used for model training or shared with third parties.
