If you buy a used unit, it may have custom settings from the previous owner. The ProKeys Sono 88 has a dedicated . Pressing this button instantly restores all settings to the default state (internal piano sound, normal MIDI mapping), which is a great starting point.

Unlike modern heavyweights (such as Kontakt-based pianos) that require gigabytes of system memory, the Proteus 88 runs smoothly on low-end laptops and older hardware.