Assertion: amplifier | /r/CapableOf | introduce a guitar amp
Facets:
value: with "high output"
type: OTHER
value: in 1932
type: TEMPORAL
Source sentences:
text: In 1932, Electro String Instruments and amplifier (this is not the same company as Stromberg Electro Instruments) introduced a guitar amp with "high output" and a "string driven magnetic pickup".