Rockford Fosgate Punch Signal Processor The Dsr1 was co-developed with iDatalink Maestro, the Dsr1 combines a full featured 3Sixty digital signal processor with a flashable Maestro integration module. The Dsr1 is capable to be used right out of the box with high or low level input, or with a quick flash download to add firmware to engage integration without the loss of factory equipped controls and features. Features Digital Signal Processing with Integrated Maestro CAN interface Four channel balanced differential RCA inputs Four channel high level inputs with signal sense turn on 18 pin analog input 16 pin analog output harness Micro USB setup/update port Auxiliary RCA and Spdif coaxial inputs 245 bands of equalization for aftermarket tuning Adjustable crossovers with selectable slope Bluetooth 4.0 connectivity Interactive tuning interface controlled via Andriod/iOS APP