SounDigital HKI MINI - DIGITAL SOUND PROCESSOR - DSP4 in 8 out processor that is designed for smartphone programming, low level integration with enough EQ and adjustment capability to tune a majority of builds out there. We knew that this processor would find a home in multiple styles of builds, so we also had the board conformal coated to help protect it in less than ideal environments. 8 Channel DSP 4 Balances RCA Inputs Max Input Level: 4Vrms(+14dBu) Input Impedance: 100K 8 RCA Outputs Max Output