electric piano
electromechanical instrument in which vibrations, caused by keystrokes on piano-style musical keyboard, are converted into electrical signals by magnetic pickups and amplified by an amplifier and speakers
en-GB/ɪˈlɛktɹɪk ˈpjɑːnəʊ/
en-US/ɪˈlɛktɹɪk piˈɑnoʊ/