Answer: echochamber

AnswerCrossword Clue
ECHOCHAMBERRecording studio feature
ECHOCHAMBERRoom for creating hollow sound effects
ECHOCHAMBERAdministrative group that oversees acoustics?
ECHOCHAMBERRoom with resounding walls
ECHOCHAMBERPlace for creating sound effects
ECHOCHAMBERPlace for hollow sound effects
ECHOCHAMBERUnideal environment for discussing policy