DSP-Quattro
DSP-Quattro: A focused macOS mastering workstation with strong delivery tools and a low-cost upgrade. Ranked #17 of 33 in Audio Mastering Software by our editors (6.9/10); pricing: Free plan; best for low-cost macOS standalone mastering.
At a glance
- Editor score6.9 / 10
- PricingFree plan
- Best forLow-cost macOS standalone mastering
- Free planYes
- Paid from$99 one-time
- Workflow typeStandalone
- Facts checked20 Sep 2026
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
Our verdict on DSP-Quattro
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, processing, checking, and delivering audio. The application combines waveform editing, a mixer, real-time input/output processing, sequencing, stereo processing, and an AudioCD layout editor with CD-ROM burning. It also supports delivery formats including AIFF, WAVE, MP3, M4A, CAF, FLAC, AAC, DDP, raw binary, and dual L/R mono.
Pricing is straightforward but separates new purchases from upgrades. The DSP-Quattro 6.x new license costs $99 one time and includes the full package for macOS. The DSP-Quattro 6.x upgrade costs $49 one time and includes the full package for existing customers registered to a previous DSP-Quattro or DSP-AudioCDBuilder version. The demo has unlimited duration, but it cannot save or export files, so the paid license is required for completed deliverables. According to the vendor’s pricing structure, the $49 option is specifically an upgrade rather than the general entry price.
The strongest fit is for Mac users who value a concentrated mastering and delivery workflow over a broader connected ecosystem. LUFS and True Peak metering support loudness review, while programmable batch processing can help with repeated file operations. DDP import and export, AudioCD layout editing, and CD burning extend the application beyond basic waveform work. The main trade-off is platform and ecosystem scope: DSP-Quattro is macOS-only and has no integrations. Choose it for standalone mastering, CD authoring, plug-in hosting, and multi-format delivery on Mac; choose an alternative if cross-platform access or connected services are central requirements.
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DSP-Quattro pricing
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DSP-Quattro fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $99 one-time |
| Workflow type | Standalone |
| Loudness standards | LUFS; True Peak |
| Stereo processing | Yes |
| Album sequencing | Yes |
| Batch processing | Yes |
| Supported plug-in formats | Audio Unit (AU) 64-bit |
| Delivery formats | AIFF; WAVE; MP3; M4A; CAF; FLAC; AAC; DDP; raw binary; dual L/R mono |
| Deployment | Desktop |
| Platforms | macOS |
| Support | Email, Community, Docs |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Pricing | Free plan (source) |
| Website | dsp-quattro.com |
| Facts checked | 20 Sep 2026 |
Alternatives to DSP-Quattro
- iZotope OzoneA broad professional mastering suite with AI assistance, deep editing, and reference tools.9.4
- WaveLabA broad mastering suite with capable Elements and Pro editions for Windows and macOS.9.2
- Waves Abbey Road TG Mastering ChainA focused mastering plug-in for modular console-style processing across major DAWs.9.0
See all DSP-Quattro alternatives →
Also Ranked In
DSP-Quattro is ranked in 3 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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