A standalone DSP for extended multichannel systems, having 12 output RCA channels and 6 RCA inputs, 12 high-level inputs, coax SPDIF input, optical TOSLINK input, 3.5mm jack AUX input, Bluetooth AptX HD input, digital remote control for volume, sub level, preset selection, input selection, mute trigger. The DSP supports the following on every output channel: High pass, low pass and band pass crossovers (Linkwitz Riley, Bessel and Butterworth) up to 48 dB/oct 31 band fully parametric EQ with +/-15 dB correction Time delay up to 15 ms for time alignment, selectable in ms, cm or inches, optional linking of channel pairs Phase phase switching between 0 and 180 degrees Level correction from 0 to -40 dB, optional linking of channel pairs Freely selectable mixing of all input channels to every output channel with the option of phase inversion of single input channels, allowing the set up of a differential rear fill Internal pink noise generator to test each individual output channel Configuration software for Microsoft Windows: DOWNLOAD HERE Manufacturer provided specs: Power supply voltage: 9-15 VDC Idling current: 0.5A Switched off without DRC: 5mA Switched off with DRC: 4mA Remote IN voltage: 6-15 VDC Remote OUT voltage: 12 VDC (130mA) Output signal THD @ 1kHz, 1V RMS: 0.0004% Bandwidth @ -3 dB: 20Hz-22kHz Master input: 98 dBA Aux input: 96 dBA Channel separation @ 1kHz: 90 dB Input sensitivity (high-level in): 2-15V RMS, 10 kOhm Input sensitivity (AUX in): 0.2-5V RMS, 22kOhm Max output level RMS @ 0.1 THD: 4V Inputs: 6xRCA analogue, 1x RCA SPDIF coax, 1x 3.5mm aux, 1x TOSLINK SPDIF, 12x high-level, Bluetooth 5.0 AptX HD module Outputs: 12xRCA analogue Control connections: 1x USB 1.1/2.0, wired remote (DRC) 8 full setup presets Auto on via high level signal detect or remote input What's included: 1x DSP unit 1x Bluetooth 5.0 AptX HD module 1x Digital Remote Control 5m USB A-B cable 5m DRC cable 1x Power supply wiring harness 2x 6-channel high-level input harnesses Mounting brackets and fasteners 1x Instructions