An RPI with a soundcard, a DAW and possibly some plugins can do that. Daws that work on a raspberry pi: - Ardour - Reaper - Renoise - Tracktion Waveform -

An RPI with a soundcard, a DAW and possibly some plugins can do that. Daws that work on a raspberry pi: - Ardour - Reaper - Renoise - Tracktion Waveform - that easyfilter tool If you don't need stereo there are some multieffects box/pedals for guitars and synths: https://www.boss.info/uk/categories/multi-effects/ https://www.boss.info/uk/categories/multi-effects/ https://www.zoom-europe.com/en/multi-effects https://www.zoom-europe.com/en/multi-effects There are also warming/effects units such as the Oto Boum or the Elektron Heat range: https://www.otomachines.com/product/boum/ https://www.otomachines.com/product/boum/ https://www.elektron.se/us/analog-heat-mkii-explorer https://www.elektron.se/us/analog-heat-mkii-explorer https://www.elektron.se/us/analog-heat-fx-explorer https://www.elektron.se/us/analog-heat-fx-explorer And most mixer/audio interfaces have some effects/filters: https://uk.yamaha.com/en/products/proaudio/mixers/mg_series_xu_model/index.html https://uk.yamaha.com/en/products/proaudio/mixers/mg_series_... https://tascam.com/us/product/model_16/top https://tascam.com/us/product/model_16/top