Head-to-head · Audio Mastering Software
StudioZIO Mastering Suite vs DSP-Quattro
StudioZIO Mastering Suite leads on 0 checks, DSP-Quattro on 2, and 2 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreStudioZIO Mastering Suite · 7.2/10
- Free planboth
- Most featuresDSP-Quattro · 3 of 3
StudioZIO Mastering Suite scores higher on our rubric for audio mastering software: 7.2 against 6.9 out of 10; our editors rank them #14 and #17.
On workflow type, StudioZIO Mastering Suite gives you Both where DSP-Quattro offers Standalone. DSP-Quattro offers album sequencing; StudioZIO Mastering Suite doesn't. DSP-Quattro offers batch processing; StudioZIO Mastering Suite doesn't.
StudioZIO Mastering Suite is the better fit for free mastering with detailed metering. DSP-Quattro is the better fit for low-cost macOS standalone mastering.
- StudioZIO Mastering Suite fits best
Free mastering with detailed metering
- DSP-Quattro fits best
Low-cost macOS standalone mastering
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Side by side
| Feature | StudioZIO Mastering Suite 7.2/10 Visit ↗ | DSP-Quattro 6.9/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.2 | 6.9 |
| Ranking | #14 in Audio Mastering Software | #17 in Audio Mastering Software |
| Best for | Free mastering with detailed metering | Low-cost macOS standalone mastering |
| Pricing model | Free | Free plan + paid |
| Starting price | Free | $99 one-time |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Desktop | Desktop |
| Platforms | macOS | macOS |
| Support | Email, Docs | Email, Community, Docs |
| Built for | Solo, Small business | Solo, Small business, Mid-market |
| Features StudioZIO Mastering Suite 1/3 · DSP-Quattro 3/3 | ||
| Stereo processing | ✓ | ✓ |
| Album sequencing | — | ✓ (best) |
| Batch processing | — | ✓ (best) |
| Specs | ||
| Workflow type | Both | Standalone |
| Loudness standards | LUFS integrated, short-term and momentary loudness; true peak in dBTP | LUFS; True Peak |
| Supported plug-in formats | AU, VST3, AAX | Audio Unit (AU) 64-bit |
| Delivery formats | Not checked yet | AIFF; WAVE; MP3; M4A; CAF; FLAC; AAC; DDP; raw binary; dual L/R mono |
| Our review | ||
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| Cons |
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| Our verdict | StudioZIO Mastering Suite is a free macOS application and plug-in for musicians, producers, and engineers who want mastering processing and delivery controls in one signal path. Its nine stages cover mid/side processing, saturation, Pink… Read the review → |
DSP-Quattro is a macOS desktop application for audio editing, mastering, CD-ROM authoring, plug-in hosting, and batch processing. Its feature set is aimed at audio professionals and users who want a standalone Mac workflow for preparing,… Read the review → |
Strengths and trade-offs
StudioZIO Mastering Suite — where it wins
- Nine-stage signal path covers processing through delivery.
- Persistent loudness, true-peak, stereo-correlation, and quality meters.
- Free permanently for personal and commercial music productions.
Where it doesn't
- Supports macOS only, with no Windows build planned.
- No batch processing or sequencing workflow.
- Plugin and standalone versions require a Mac-based setup.
DSP-Quattro — where it wins
- LUFS and True Peak metering for loudness-focused mastering
- DDP, CD burning, and multiple delivery formats in one workflow
- Programmable batch processing and 64-bit Audio Unit hosting
Where it doesn't
- Runs only on macOS
- No integrations with external platforms
- Demo cannot save or export files
- StudioZIO Mastering Suite7.2/10 · Free plan
A capable free mastering suite for Mac users who need detailed metering.
Visit StudioZIOFull verdict → - DSP-Quattro6.9/10 · Free plan
A focused macOS mastering workstation with strong delivery tools and a low-cost upgrade.
Visit DSP-QuattroFull verdict →
All audio mastering software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update