Allen & Heath iDR4 + IDR Audio OUTput Xpander

iDR-4 and iDR-8 are 16 x 16 matrix mixers with an extensive array of audio management tools designed to reduce the need for additional devices for an installation, or carried in the hire inventory. Allen & Heath preamps, 24bit converters and fixed DSP architecture ensure that concert-quality low-latency sound is delivered efficiently to where it is needed.

http://www.allen-heath.com/ahproducts/idr-4/

http://www.allen-heath.com/ahproducts/idr-out/
http://www.performanceaudio.com/item/allen-heath-idr-4-16x16-matrix-mixer/199/
http://www.allen-heath.com/media/idr-expander_ug_ap4774_2.pdf

Precio por los dos equipos (no venta por separado)