FabFilter Pro vs Robot Butter

FabFilter Pro-Q 2 is a transparent, high-quality equalizer plug-in for mixing and mastering purposes, with up to 24 bands and a gorgeous interface for easy and precise editing. With its unique Natural Phase mode, it matches both the magnitude and phase response of analog EQ'ing perfectly. Innovative features like Spectrum Grab and EQ Match together with its intelligent interactive EQ display make Pro-Q 2 an absolute joy to use. The Pro-Q 2 app filters the microphone input and plays it back in real-time. To use Pro-Q 2 as a plug-in, you need an AUv3-compatible host app like Auria, AUM or Cubasis. Pro-Q 2 will appear in the list of Audio Unit extensions for effect plug-ins in the host app. Key features: - Highest possible sound quality - Gorgeous Retina interface with large interactive EQ display, multi-band selection and editing for maximum ease of use and efficiency - Up to 24 EQ bands - Operates in zero latency mode, linear phase mode with adjustable latency or the unique Natural Phase mode - Filter shapes: Bell, Notch, High/Low Shelf, High/Low Cut, Band Pass, Tilt Shelf - Universal filter slope support for all filter types, up to 96 dB/oct - Spectrum Grab: just grab and adjust a peak in the real-time spectrum analyzer right away! - EQ Match feature to automatically match the spectrum of another track - Optional Gain-Q interaction - Each band can operate on the stereo signals or on the left or right channels independently for per-channel EQ-ing - Built-in spectrum analyzer with Pre-EQ, Post-EQ and SC modes, adjustable range, speed, resolution, tilt and freeze - Auto Gain and Gain Scale - Mid/side mode where you can EQ the mid and side signals separately - Optional piano roll display to quantize EQ frequencies to musical notes - Different display ranges: 3 dB and 6 dB ranges for mastering, 12 dB and 30 dB for mixing - Intelligent solo mode makes it easy to find problem frequencies and hear the effect of a band - Phase Invert option to change polarity - Large output level meter with peak level readout - Undo/redo and A/B comparison "FabFilter Pro-Q 2 is sure to be the first plug-in we add to almost every channel on every mix we do for the next few years. Absolutely brilliant! Verdict: 10/10!" — MusicTech Magazine "FabFilter Pro-Q 2 is practically impossible to fault, being absolutely stunning in terms of usability, functionality and sound. Verdict: 10/10!" — Computer Music Magazine

Robot Butter is a creative AUv3 audio effect for compatible hosts on iOS & iPadOS. It blends animated modulation, adaptive reverb, tempo-aware movement, and digital texture into one fast, playable interface. At the core is the Robot engine, where Actuator, Viscosity, and Controller create the main motion and character of the signal. That signal then feeds Butter, an adaptive reverb stage designed to intelligently stay musical while responding to the effective movement of the Robot section. The result can move from focused width and pulse to washed ambience, strange motion, and unstable experimental color. The Chipset section extends the sound with a built-in assignable LFO matrix and a post-reverb System Bus reduction stage. Run the LFO freely in Hz or lock it to musical divisions for host-synced movement, then route it to key Robot or Butter controls for evolving motion. Add System Bus for subtle grain or push it harder for sharper, crushed digital edge. Robot Butter is designed to stay immediate. The interface gives you direct control over modulation, blend, depth, reverb shape, output mix, and motion timing without pushing you into a complicated modulation environment. A built-in user manual inside the standalone app includes overview pages, parameter explanations, quick-start guidance, glossary entries, MIDI notes, and troubleshooting help, with scrollable section pills that keep longer labels readable. Factory presets and user presets make it easy to jump from polished mix enhancement to stylized movement and aggressive sound design. Features: - Robot modulation engine with Actuator, Viscosity, Controller, and gain staging - Butter adaptive reverb with Churn, Emulsion, and Culture controls - Built-in LFO matrix with free or tempo-synced timing - Assignable LFO destinations across Robot and Butter parameters - System Bus sample-rate reduction stage for animated digital texture - Imaging modes including Mono, Wide, Ping, and Drift when stereo processing is available - Factory presets covering vocals, guitars, bass, keys, synths, drums, utility, and experimental categories - User preset save, recall, and delete support - Comprehensive built-in in-app user manual with quick-start, glossary, and troubleshooting sections - MIDI Learn, Host Learn support, and default CC mappings for hands-on control - Optional MIDI CC broadcast for compatible host-routing workflows - Host tempo sync with straight, dotted, and triplet divisions Use Robot Butter for vocal movement, guitar widening, synth pulse, drum bus animation, ambient wash design, or aggressive lo-fi modulation chains. It is built to move quickly from musical enhancement to animated destruction while keeping the workflow focused and playable.