GSDSP Quantum Filter
EQ / Filter with Modulation
$9.99
Also Included In
Creative MultiMode Filters
Analog modelled resonant Filters, flexible routing and next-level modulation!
AUv3 effect plugin for Logic Pro, AUM, Cubasis, GarageBand etc
Analog warmth meets flexible routing and dynamic modulation in a filter workstation built for creative sound design.
Analog-Modelled Filters
Quantum Filter uses resonant, analog-modelled filter designs that behave smoothly and musically across the entire spectrum. With no cramping, stepping, or digital artefacts, the filters remain stable even under rapid modulation. At high resonance settings they can reach self-oscillation, similar to classic hardware circuits.
Filter Types & Routing
Choose from 11 filter modes, including Lowpass, Highpass, Bandpass, Notch, Shelving options, Bell, and Ladder Lowpass in 1–4 pole configurations. Combine filters in series (up to three stages) or parallel (up to two), resulting in over 2,000 possible routing combinations for detailed tone shaping and complex layered filtering.
Built for Modulation
Designed to handle fast, artefact-free modulation, Quantum Filter responds cleanly even under rapid parameter changes. Its stability makes it suitable for dynamic environments, rhythmic modulation, or complex movement across multiple filter stages.
Stereo and Dual Mono
Switch between stereo and dual mono modes to shape the stereo image. In dual mono mode, left and right channels can move independently, enabling asymmetric movement, wider imaging, or separate modulation paths for each side.
MIDI Control
Quantum Filter integrates ADSR & AR modulators that respond directly to MIDI, allowing envelope-driven filter motion that behaves like a synthesizer’s filter section. This integration adds expressive control for rhythmic gating, animated sweeps, and dynamic shaping based on your playing or sequencing.
Quantum Filter is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more.
A Desktop version is also available for Windows and macOS (VST3 / AU / AAX).
More information here: https://gs-dsp.com/products
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
- Completely redesigned UI: Hi-res knobs and sliders, improved layouts and skins
- Gate and Trigger modes for LFOs and Random modulators
- Single Slider with BPM tpye grid control for LFOs and Random modulators
- New PulseTrain modulator
- Improved Follower range handles
The developer, Gustav Scholda, 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
- Provider
- Gustav Scholda
- Size
- 78.1 MB
- Category
- Music
- Compatibility
Requires iOS 12.0 or later.
- iPhone
Requires iOS 12.0 or later. - iPad
Requires iPadOS 12.0 or later. - iPod touch
Requires iOS 12.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- Age Rating
4+
- 4+
- Copyright
- © 2025 GS DSP
