If you're planning a system that uses two or more JL Audio VXi amplifiers, you may want their VXi-HUB network interface as well. The VXi-HUB lets you control all the channels of sound from one application on your computer, phone, or tablet. The VXi-HUB provides digital network connectivity for one master VXi amplifier and up to five slave VXi amps, so you can use the JL Audiosoftware to synchronize all digital sound processing controls and presets. Up to two VXi-HUBs can be daisy-chained to network up to ten VXi amplifiers in a mega-size sound system.