Complex sentence: The Victrola was unique due to the fact that it features an amplification horn folded beneath the turn table and hidden within a wood cabinet and when the listener opens these cabinet doors the volume would have an increased sound.
Split into simpler sentences: The Victrola was unique due to the fact that it features an amplification horn folded beneath the turn table and hidden within a wood cabinet. When the listener opens these cabinet doors the volume would have an increased sound.