Covers both electric pianos in the classic Rhodes / Wurlitzer sense and modern digital pianos with weighted 88-key keyboards. Distinct from 电子琴 (home keyboard with preset rhythms) — 电钢琴 aims to replicate grand-piano touch and tone.
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电 = electric, 钢琴 = piano (literally 'steel zither', a calque of the Japanese 鋼琴 name). Simply prefix 电 to turn an acoustic into its electric version — same pattern as 电吉他.