The house is administered by the Royal Danish Theatre and is one of the best-equipped in the world. It has a main stage with five other stages directly connected, where large setups can be moved easily in and out.
The theatre can seat between 1492 and 1703, depending on the size of the orchestra. The 1492 seats are all individually angled in order to provide the best experience.
The orchestra pit is one of the largest in any opera house, with room for 110 musicians; the structure provides excellent sound quality for the orchestra. If the pit is filled, some musicians are located just below the front of the stage, which has become controversial among some members of the orchestra (according to tour guides in 2005), because this increases the sound levels, beyond those acceptable in Denmark. However, the overhang is very slight and the authorities have permitted this to happen.
During construction of the theatre, some acoustic tests were carried out with the fire curtain in place while technical work was carried out on stage, but great consideration was given to balance between pit and stage. If the orchestra is small or absent, the pit can be covered and additional seats can be added to the auditorium.

Opera House entrance
Just like the old Royal Danish Theatre in Copenhagen, The Queen has her own box on the left side of the auditorium, closest to the stage. According to the tour guide[who?], she decided that she preferred this arrangement rather than the more conventional central placement because she loves to be close to the stage to see the artists preparing in the wings before entering the stage.
The foyer has been designed for comfort, based on behavioural research on operagoers maximizing the wall area for standing against, while still providing views across the entire foyer and one of the best views on Copenhagen.