Assertion: digital piano | /r/HasProperty | equipped with built-in amplification
Facets:
value: commonly
type: TEMPORAL
value: unlike stage pianos
type: OTHER
Source sentences:
text: Unlike stage pianos, portable digital pianos were commonly equipped with built-in amplification and loudspeakers, usually has lower cost than other types, and its sound quality was often comparable or similar to that of a conventional keyboards due to a simpler sound synthesis system, though some models, often utilize a similar sound generation system as the more advanced model lineups of the same manufacturer.