The BOUTIQUE system is a highly flexible and self-amplified PA/VA system targeting small to large installations.The BTQ-VM4/BTQ-VM8 controllers offer 4/8 monitored speaker zones respectively. Each controller can cascade with up to 31 BTQ-SL8 secondary units via local digilink, and up to 64 x BTQ-VM4/VM8/SG8 units via global-net. This will then extend as little as 4 monitor A/B speaker zones to a large networked system of up to 16,384 zones.The BOUTIQUE controller comes with an internal 250W or 500W high efficiency Class-D amplifier built-in, and is also available in rackmount type and wall-mount type.