Classic FX is a comprehensive sound effects processor and mono-to-stereo enhancer designed for iOS and macOS devices. It features a collection of high-quality processing algorithms that add brightness and spatial depth to various audio sources, including musical instruments, synthesizers, drums, and vocals. The application combines an equalizer, effects, and reverb with intuitive controls, making it easy to customize sounds while allowing room for creative experimentation.

A standout feature of Classic FX is its Morphing capability, which enables smooth transitions between two effect presets through a simple fader or button control. This dynamic transformation is powered by a complex effects matrix, allowing users to craft unique sound evolutions effortlessly. Additional modulation options include three LFOs with diverse waveforms and syncable BPM ranges, providing enhanced control over morphing and creating intricate audio textures.

Classic FX supports multiple platforms and workflows, functioning as a standalone app or Audio Unit plugin compatible with popular DAWs like Ableton Live, Logic Pro, and GarageBand. It offers 22 processing algorithms, 40 presets, a three-band equalizer, algorithmic reverb, and an output limiter to prevent clipping. Features such as an envelope follower, sequencer, and hot buttons streamline effect management, while its compatibility with Audiobus and Ableton Link ensures seamless integration into various setups. All functionalities are fully accessible on both iOS and macOS devices.