DSP-Quattro

DSP-Quattro is a standalone macOS application for editing and mastering audio, sequencing albums, and preparing files for delivery. It best fits Mac users who want those jobs alongside CD-ROM burning and batch processing in one application. Its broad workflow is appealing, but the demo cannot save or export work and plug-in hosting is limited to Audio Units.

Overview

DSP-Quattro spans more than mastering: it combines waveform editing, sound enhancement, real-time processing, stereo processing, album sequencing, and batch work. That makes it a practical candidate for moving from individual file edits to a finished album sequence without changing applications. It also burns audio CD-ROMs and supports LUFS and True Peak loudness standards.

Delivery options include AIFF, WAVE, MP3, M4A, CAF, FLAC, AAC, DDP, raw binary, and dual L/R mono. The breadth is useful when projects need several output types, though users whose workflow depends on VST plug-ins should look elsewhere: DSP-Quattro hosts 64-bit Audio Unit effects and instruments only.

Key features

• Audio editing and processing: Waveform editing, sound enhancement, and real-time processing support file-level work as well as mastering.
• Album preparation: Stereo processing, album sequencing, and LUFS and True Peak support suit users preparing a sequence of tracks for delivery.
• Batch processing: Batch operations help with repetitive work across multiple files.
• CD and file delivery: Audio CD-ROM burning sits alongside export to common audio formats, DDP, raw binary, and dual L/R mono.
• Audio Unit hosting: The 64-bit AU support covers effects and instruments, but not VST plug-ins.

Pricing

The new DSP-Quattro 6.x license costs $99 a month for the full macOS package. It is the relevant option for new users who want the complete application, but the monthly term makes ongoing cost an important consideration.

The DSP-Quattro 6.x upgrade costs $49 a month for the full package and is restricted to customers already registered to an earlier DSP-Quattro or DSP-AudioCDBuilder version. It lowers the stated monthly price for eligible existing customers, but is not an entry plan for new buyers. There is no free plan. The demo has no time limit, but cannot save or export audio, export DDP, or burn Audio CD-ROMs, so it cannot validate a complete delivery workflow.

The license is for one owner and personal use, rather than being limited to one installation. Technical support and bug fixes are provided to the original purchaser for 12 months, subject to the EULA; refunds are possible within 14 days of purchase by contacting support.

Platforms

DSP-Quattro runs on macOS 10.14 or newer and supports Intel and Apple Silicon Macs natively. It is standalone software, with 64-bit Audio Unit as its supported plug-in format.

Who it's for

Choose DSP-Quattro if you work on a Mac and want editing, mastering, album sequencing, batch processing, and CD-ROM or DDP-oriented delivery in one standalone workflow. It is a weaker fit for VST-based studios, Windows users, or anyone who needs to save and export during evaluation.

Pros and cons

• Pro: Editing, mastering, sequencing, batch work, and CD-ROM burning are brought together, reducing the need to divide those tasks among separate tools.
• Pro: A wide range of delivery formats, including DDP and dual L/R mono, suits varied output requirements.
• Pro: Native support for Intel and Apple Silicon Macs broadens compatibility across Mac hardware.
• Con: No VST support rules it out for workflows built around VST plug-ins.
• Con: The demo cannot save, export, or burn discs, limiting how fully prospective buyers can assess a real project.
• Con: The new license is priced monthly, and the lower-cost upgrade is only for registered previous-version customers.

Alternatives

• StudioZIO Mastering Suite is worth considering for Mac users seeking a free option with AU, VST3, AAX, and standalone formats; it requires macOS 11 or newer.
• WaveLab is an option for readers who want a paid product available on both macOS and Windows.
• FabFilter Pro-L 2 is another paid choice for users considering a limiter across Windows, macOS, or iOS.
• HOFA CD-Burn.DDP.Master suits users focused on Red Book CDs, DDP images, and vinyl or streaming export; it costs €89.90, paid once and includes HOFA plugins.
• TDR Limiter 6 GE may suit those who want a limiter with a free plan or broad OS support; its personal or small-business license is €60, paid once for one user and up to five computers.
• Acoustica is a paid macOS and Windows alternative, with Standard and Premium plans for different channel counts.
• Softube Flow Mastering Suite is another paid option for Windows and macOS.
• FLUX:: Elixir is another paid option for Windows and macOS.

Explore more in Audio Mastering Software, Audio Editing Software, and Game Audio Editors.

Verdict

DSP-Quattro is the stronger choice for Mac users who want file editing, mastering, album sequencing, batch processing, and multiple delivery paths under one roof. Its main drawbacks are the Audio Unit-only plug-in support and a demo that cannot complete an export or disc-burning workflow. If those limits fit your setup, it offers a broad standalone toolset; if not, choose a VST-compatible or cross-platform alternative.