音響 おんきょう調整 ちょうせい たくじゃありませんでした
onkyōchōsei takuja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 音響調整卓

1. Was not an audio mixing console.; Was not a soundboard.

Past/Perfective
Negative
Polite
Terminal Form