Amp Locker vs Rustortion

Amp Locker is a guitar sound-shaping suite built around virtual amps, stompboxes, cabinets, and effects. It runs on Windows, macOS, and Linux as a standalone app or plug-in. The free download includes the Prestige 1950 amp, seven FX pedals, seven rack effects, and 11 three-dimensional cabinets with 11 microphones. Users can adjust pedals and rack effects and move microphones around the cabinets. Other listed tools include double tracking emulation, MIDI support, an IR loader, and the 3D Cab Impact algorithm. The stated plug-in formats are AU, VST3, RTAS, and AAX. More gear modules can be licensed individually inside the application, and optional extras include DSP and AI amp profile players. The $5 a month subscription covers Amp Locker and Mix Locker modules, but excludes 3D Cab add-on packs and signature amp sims such as Berry Amp. Cancelling the subscription deactivates the plug-in. The license limits installation to machines where the licensee is the sole user and bars machines that could redistribute plug-ins to other computers.

Rustortion is a free guitar and bass amp simulator written in Rust for Linux and Windows. It runs standalone with JACK or inside a DAW as a VST3 or CLAP plugin. The processing chain has 12 DSP stages, including preamp, compressor, tone stack, power amp, effects, graphic EQ, and NAM model loading. Oversampling can be set from 1x through 16x, and impulse-response cabinet simulation is available for guitar and bass. Users can save and load presets, switch them with keyboard hotkeys, record in real time, tune, shift pitch with FFT processing, and use MIDI controllers. Plugin bundles are listed for Linux x86_64, Linux aarch64, and Windows x86_64. The project is MIT-licensed, experimental, and under active development, with use at the user’s own risk. Linux requires PipeWire, JACK support, and a Rust toolchain. There is no macOS build. The interface supports English and Simplified Chinese.