Assertion: bass amplifier | /r/HasProperty | integrated units
Facets:
value: with a preamplifier
type: OTHER
value: with equalizer
type: OTHER
value: usually
type: TEMPORAL
value: with a power amplifier
type: OTHER
Source sentences:
text: Separate bass amplifiers which do not contain speakers, often called "heads" or "amp heads", are usually integrated units, with a preamplifier, equalizer (bass and treble controls) and a power amplifier combined in a single unit.