DSP-Quattro vs Tunr

DSP-Quattro is a macOS application for editing and mastering audio files, burning audio CD-ROMs, hosting plug-ins, and processing batches. Its editor supports 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. The demo has no time limit, but saving or exporting audio, exporting DDP, and burning audio CD-ROM are unavailable in it. The new license is listed at $99 a month; the $49 a month upgrade is for customers registered to a previous DSP-Quattro or DSP-AudioCDBuilder version. The license is for personal use and belongs to one owner. Email support is listed, and refunds may be requested within 14 days after purchase.

Tunr is a desktop audio mastering app for macOS and Windows. It analyzes tracks and creates genre-aware masters on the user’s computer, with no internet connection needed for mastering. Auto mode applies a mastering chain; Reference mode uses a chosen track to match tone, dynamics, and loudness. That mode accepts WAV, FLAC, and MP3. Its A/B Mixer supports equal-power crossfades, null and blind tests, loudness matching, and listening in stereo, mono, mid, or side. Batch mode processes queued tracks in sequence with shared settings and saves each result as it finishes. Without a licence key, the free plan renders three masters per machine; mixer comparisons and analysis do not count toward that limit. A free licence key provides unlimited masters on two machines. Tunr is standalone, not a DAW plugin. It supports macOS 11 or later on Apple Silicon and Intel, plus 64-bit Windows 10 or later. The maker says files are never uploaded and the app has no usage telemetry or third-party trackers.