Brick XL Hardwired 12-2 Brick Networks are special

12-2 Brick Networks are special filter circuits hand-built in protective pods

REFERENCE Speaker is handcrafted in the USA and is upgradeable to XL

You can confirm here that High Performance 14 AWG Speaker Cable is the best choice for your installation

It is upgradeable to ULTRA Speaker Cable or higher

Brick XL Hardwired 12-2 Brick Networks are specialDesigned to be used only with The Wall REFERENCE Speaker Cable, The Brick XL networks are highly customized to your system layout, system components, and the specific length of cable used for each channel of the installation. Transparent custom calibrates The Brick XL to specific amplifier electrical characteristics. There is a 2 week lead time to manufacture these custom products.