Assertion: stereo amplifier | /r/HasProperty | breakthrough
Facets:
value: in tubed design
type: OTHER
value: in its time
type: TEMPORAL
value: in the more elusive aspects
type: OTHER
Source sentences:
text: His huge stereo amplifier was, in its time, a breakthrough in tubed design, both in power output, and, in the more elusive aspects of reproducing a facsimile of a concert hall sound.