www.kvraudio.com/news/apu-software-updates-loudness-series-to-v5-5-4-67050
20th May 2026
APU Software has updated Loudness Leveler, TrueGain, Loudness Contour, Spectrum Analyzer, Loudness Meter, Loudness Compressor, Dynamics Optimizer, and Loudness Limiter to version 5.5.4.
Fix PLR/PSR/Crest peak durations (meter).
Fix startup/reset glitch in contour shape (contour/truegain).
Audio thread optimization (contour/truegain).
Preset browser with search and categories.
Add option to full reset on preset load.
Fix text overlapping in horizontal orientation.
Fix AU validation failures.
Separate low-latency setting from timing mode (leveler).
Add Integrated reset for PLR (meter).
Support PLR/PSR/Crest peak ratio output types (meter).
Add warning when Detector EQ monitor is enabled (compressor/leveler).
Allow macOS installers to install older versions.
Fix slow startup.
Fix preset names not updating in certain scenarios.
Fix name mismatch for calibration signals (contour/truegain).
Improve FIR contour filter switching performance (contour/truegain).
Mini-mode toggle in upper-right next to dark mode toggle (truegain).
Fix rare race condition during latency updates.
KVR Audio, Inc.
www.kvraudio.com