DSP-Quattro

Name: DSP-Quattro
Price: 49 USD
Author: DSP-Quattro

Free trial Mac

What DSP-Quattro is

DSP-Quattro is a macOS application for editing and mastering audio files, burning audio CD-ROMs, hosting plug-ins and processing batches. Its editor handles multiple audio formats, waveform editing, sound enhancement and real-time processing. It hosts 64-bit Audio Unit effects and instruments, but does not load VST plug-ins. Version 6 requires macOS 10.14 or newer and runs natively on Intel and Apple Silicon Macs. Listed delivery formats include AIFF, WAVE, MP3, M4A, CAF, FLAC, AAC, DDP, raw binary and dual L/R mono. A demo is available without a time limit, but it cannot save or export audio, export DDP or burn audio CD-ROMs. The new-license plan is listed at $99 a month. An upgrade is listed at $49 a month and is for customers registered to a previous DSP-Quattro or DSP-AudioCDBuilder version. Its license is for personal use and belongs to one owner, rather than being limited to one installation. The maker lists email support and possible refunds within 14 days after purchase.

Who it suits

DSP-Quattro suits Mac users who need audio editing, mastering, plug-in hosting or batch processing. It may fit workflows based on Audio Unit plug-ins rather than VST.

What it does well

Runs natively on Intel and Apple Silicon Macs.
Supports multiple audio delivery formats.
Hosts 64-bit Audio Unit effects and instruments.
Demo has no time limit.
Refunds may be requested within 14 days.

What to know first

Requires macOS 10.14 or newer.
Does not load VST plug-ins.
Demo cannot save or export audio.
License is for personal use only.

Limits

The demo has no time limit but cannot save or export audio files, export DDP, or burn Audio CD-ROM. The $49 a month upgrade is limited to customers registered to a previous DSP-Quattro or DSP-AudioCDBuilder version.

Plans

Plan	Billed and limits	Price
DSP-Quattro 6.x upgrade	US$ 49.00 (*) · One upgrade license · MacOS · full package · for customers registered to a previous DSP-Quattro or DSP-AudioCDBuilder version	$49, paid once
DSP-Quattro 6.x new license	US$ 99.00 (*) · One license · MacOS · full package	$99, paid once

As dsp-quattro.com lists them, read 28 Sept 2026. The maker's own page has the final word.

Getting started

Visit the DSP-Quattro website.
Confirm that your Mac runs macOS 10.14 or newer for version 6.
Choose the new license at $99 a month, or the $49 a month upgrade if registered to an earlier DSP-Quattro or DSP-AudioCDBuilder version.
Use the demo to explore the application; it has no time limit, but cannot save or export audio, export DDP, or burn Audio CD-ROM.
Use email support for assistance.

Verdict

DSP-Quattro brings editing, mastering, plug-in hosting and batch processing into one macOS application. Its Audio Unit-only plug-in support and restricted demo are important limits to weigh.

Questions

Is DSP-Quattro free?

There is no free plan. A demo is available without a time limit, with saving, audio export, DDP export, and audio CD-ROM burning disabled.

How much does DSP-Quattro cost?

The new DSP-Quattro 6.x license is listed at $99 a month. The upgrade is $49 a month for eligible customers registered to an earlier version.

Which operating systems does DSP-Quattro support?

It is for macOS. Version 6 requires macOS 10.14 or newer and runs natively on Intel and Apple Silicon Macs.

Does DSP-Quattro support VST plug-ins?

No. It hosts 64-bit Audio Unit effects and instruments, but does not load VST plug-ins.

What can DSP-Quattro do?

It combines audio file editing, mastering, audio CD-ROM burning, plug-in hosting, and batch processing. Its editor includes waveform editing, sound enhancement, and real-time processing.

Who makes DSP-Quattro, and what support is offered?

The maker is DSP-Quattro, based in Rome, Italy. It lists email support and technical support and bug fixes for the original purchaser for 12 months, subject to the EULA.

Facts from DSP-Quattro's own pages

Audio editing: The audio file editor supports multiple audio formats, waveform editing, sound enhancement, and real-time processing. · dsp-quattro.com, 28 Sept 2026
Batch processing: Batch processing can apply plug-ins across audio files and is described as non-destructive. · dsp-quattro.com, 28 Sept 2026
Demo limits: The demo is not time-limited, but cannot save or export audio files, export DDP, or burn Audio CD-ROM. · dsp-quattro.com, 28 Sept 2026
Free plan: Yes · dsp-quattro.com, 20 Sept 2026
Headquarters: Rome, Italy · dsp-quattro.com, 28 Sept 2026
License use: The FAQ says a license is single-owner rather than single-installation and is for personal use only. · dsp-quattro.com, 28 Sept 2026
Mac compatibility: Version 6 requires macOS 10.14 or newer and runs natively on Intel and Apple Silicon Macs. · dsp-quattro.com, 28 Sept 2026
Maker: The site identifies Stefano Daino as the developer and gives a Rome, Italy address. · dsp-quattro.com, 28 Sept 2026
Plugin formats: Audio Unit (AU) 64-bit · dsp-quattro.com, 20 Sept 2026
Plug-in support: DSP-Quattro hosts 64-bit Audio Unit effects and instruments; it does not load VST plug-ins. · dsp-quattro.com, 28 Sept 2026
Privacy and security: The privacy policy says the maker uses technical, organizational, and physical safeguards but cannot guarantee personal information security. · dsp-quattro.com, 28 Sept 2026
Privacy choices: Users can request deletion of personal information or their user-area account and can opt out of marketing emails. · dsp-quattro.com, 28 Sept 2026
Purpose: DSP-Quattro combines audio file editing, mastering, audio CD-ROM burning, plug-in hosting, and batch processing. · dsp-quattro.com, 28 Sept 2026
Refunds: Refunds are possible within 14 days after purchase, by contacting the support team. · dsp-quattro.com, 28 Sept 2026
Paid from: 49 · dsp-quattro.com, 20 Sept 2026
Support: The maker lists email support and says technical support and bug fixes are provided to the original purchaser for 12 months, subject to the EULA. · dsp-quattro.com, 28 Sept 2026