Electric grand piano
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The electric grand piano is a stringed musical instrument played using a keyboard, in which the vibration of strings struck by hammers is converted by pickups into electrical signals, analogous to the electric guitar's electrification of the traditional guitar.
Since electric amplification eliminates the need for a resonant chamber, electric grand pianos are smaller and lighter (around 300 pounds (140 kg)), and consequently more portable, than acoustic pianos. Electric amplification also bypasses the difficulty of having to mic a conventional grand piano, and thus makes an electric grand easier to set up with a sound system.