Ashly ne24.24M Protea DSP Matrix Digital Processor - 12-in x 4-outNetwork Enabled Matrix Processing with Protea DSP. The ne24. 24M Matrix Processor uses modular expansion cards to provide up to twenty four channels of audio matrixing and processing. Matrixing allows you to route any input to any output and control individual levels once they have been assigned. Fixed path architecture and extensive processing power per channel will reduce the amount of time it takes to set up your system. All programming is