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OpenPreamp 1.0.2
OpenPreamp 1.0.2
Full source release with Standard, Circuit Preview and HQ engines across Brit,
N-Type, FSF and A-Type. HQ selects the full component model and remains the
factory default. Circuit Preview provides reduced models with documented fidelity
limits; measured stage-identification candidates are not promoted into the engine.
- Independent Default / 1x / 2x / 4x oversampling. Default selects 1x for
Standard/Circuit and 2x for HQ; legacy sessions retain their previous rates. - Native-rate ADAA for Standard/Circuit, disabled at 2x/4x. HQ uses no ADAA.
2x uses IIR resampling and 4x uses FIR resampling. - Published measurement pipeline and actual 48 kHz/PCM24 plugin report:
four models × three engines × three explicit rates, 72 offline captures,
92 PNG/SVG chart pairs, complete CSV data and linear sweep harmonic/alias maps. - Updated illustrated manual and screenshots, plus reproducible CPU, residual
ADAA, realtime and measurement checks. Windows build/installer source included.
Read the measurement report and
user manual. The release measurement ZIP includes the
complete gallery and gzip CSV spectrogram maps. Synthetic hardware plots are
excluded; no physical hardware was measured. Short fixtures do not establish
listening approval, detailed dynamics or hardware equivalence.
The macOS DMG contains a signed PKG installer for universal VST3, AU, CLAP and
LV2. It installs into /Library/Audio/Plug-Ins for all users. After installation,
a dialog offers to move matching older/current user-folder copies to Trash;
Move to Trash is the default. Newer copies and other accounts are retained.
Unattended installs retain user copies and include a manual review command. AAX binaries,
private references and optional SDKs are excluded from public distribution.
Mono/stereo only. Meters show sample peaks, not true peaks. Mode changes reset
histories without a transition crossfade. There is no limiter. Models contain
estimated parameters and simplified devices. Circuit Preview has not passed
all HQ sound-equivalence gates.
Updated macOS installer
The DMG now contains OpenPreamp-1.0.2-Installer.pkg. Quit your DAW and run
the PKG with administrator authorization to install all formats in the main
/Library/Audio/Plug-Ins folders. After installation, the dialog lists matching
older/current user copies and offers Move to Trash as its default button.
It waits for confirmation; Keep User Copies or Escape leaves them in place.
Newer copies and other accounts are retained. Unattended installs retain user
copies and include a review command in the installed support folder.
Both PKG and DMG are Developer ID signed, Apple notarized and stapled. The
plugin DSP binaries retain source revision dcd2d42; installer code/documentation
are from 65e3268. Package payload and cleanup fixtures were verified on both
architectures. No live installation or real user-copy cleanup was performed
on the development machine.