Assertion: headphone's impedance | /r/HasProperty | high
Facets:
value: relatively
type: DEGREE
Source sentences:
text: Historically, many headphones had relatively high impedance, often over 500 ohms so they could operate well with high-impedance tube amplifiers.
text: Historically, many headphones had relatively high impedance, often over 500 ohms so they could operate well with high-impedance tube amplifiers.