Opera house electronic libretto systems have begun to be used in some opera houses, including New York's Metropolitan Opera, Milan's La Scala, and the Crosby Theatre of The Santa Fe Opera, which provide two lines of text on individual screens attached to the backs of the seats so as to not interfere with the visual aspects of the performance. A subtle type of sound reinforcement called acoustic enhancement is used in some opera houses. Acoustic enhancement systems help give a more even sound in the hall and prevent "dead spots" in the audience seating area by "...augment[ing] a hall's intrinsic acoustic characteristics."
La Scala pit-stalls, arranged in six tiers of boxes above which is the 'loggione' or two galleries. Its stage is one of the largest in Italy (16.15m d x 20.4m w x 26m h). Building expenses were covered by the sale of boxes, which were lavishly decorated by their owners, impressing observers such as Stendhal. La Scala (as it came to be known) soon became the preeminent meeting place for noble and wealthy Milanese people. In the tradition of the times, the main floor had no chairs and spectators watched the shows standing up. The orchestra was in full sight, as the