This 60 m2 listening room conforms to the recommendation ITU-R BS775-1 for multichannel/surround setups (5.1, 8.2 etc.) and also to the standards for rooms used for stereo listening setups, e.g. evaluation of sound quality. The room is a completely symmetrical double door construction. The reverberation time is variable (reflective/absorbing moveable panels) between approximately 0.2 to 0.4 seconds. The listening room can be used for both listening tests and measurements. It is controlled from Control room Q via e.g. B&K microphone connections, 50 ohm cables, signal/loudspeaker cables and serial data connections.