P422 Fairuz
4-Band Op-Amp Parametric EQ
$19.99
The op-amp sound that put punch and harmonic density on decades of hit records — now on iPad and iPhone. Four musical bands, TREMOR sub, live spectrum. AUv3 ready.
P422 Fairuz is a four-band op-amp parametric EQ that moves past hardware — the punch and harmonic density of classic op-amp circuits, with capabilities the originals never had.
Shape your sound with HIGH, HI-MID, LO-MID and LOW bands, each with three selectable curves (Bell, Contour, Contour X2) and proportional Q: wide stays wide, narrow finds itself. LO and HI shelves with complementary dip behavior, switchable HPF/LPF, and the TREMOR circuit laying a sub-bass foundation below 30 Hz.
Character comes from the circuit, not just the curve: the VOICE input transformer control and HAMMER output stage add body, density and saturation — op-amp color available even with the EQ bands off. Blend it all in parallel with the MIX control, no DAW routing needed.
FEATURES
- Four op-amp EQ bands with Bell / Contour / Contour X2 shapes
- Proportional Q — musical at any width
- Stepped or continuous frequency modes
- LO / HI shelves with complementary dip
- TREMOR sub-bass circuit below 30 Hz
- Switchable HPF / LPF with position options
- VOICE input transformer and HAMMER output stage saturation
- MIX parallel blend and Dual Mono L/R behavior
- Real-time IN/OUT spectrum analyzer with zoom
- A/B states and 275+ factory presets with favorites
- Out & Trim linked gain staging
- Zero latency, optional oversampling
FORMATS
- AUv3 plug-in for AUM, Logic Pro, GarageBand, Cubasis and other AUv3 hosts
- Standalone app with mic/interface input
Bring console-grade op-amp tone to your iPad and iPhone.
What's new in 2.1.0
• HIGH and HI-MID bands are now crystal clear at the top: the filter curves keep their true shape right up to the edge of hearing, identical at every sample rate. Your existing presets and sessions sound exactly the same as before.
• Fixed: at sample rates between 48 and 88.2 kHz the whole mix was being softened by a protection filter.
• TREMOR's analog movement is back to its slow, organic drift.
• The spectrum visualizer now follows your presets: it opens or closes with the preset you load.
• Preset browser: Save stores into the selected folder, Rename never overwrites an existing name, deleting a folder always asks first, and Delete greys out when there is nothing to delete.
• Switching oversampling during playback is now glitch-free, CPU use is lower with the visualizer closed, and the response display has a higher resolution.
• Several stability fixes.
• About window tidied up on iPad and iPhone.
Requires iOS 15 or later.
The developer, Pulsar Modular, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ZIAD AL SIDAWI INVESTMENT
- Size
- 44.6 MB
- Category
- Music
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 Pulsar Modular
