An amplifier with DSP based on TPA3116D2 and ADAU1701 with 4 outputs and stereo input.
DSP programming can be done with SigmaStudio and needs an appropriate programmer. Check links for information on the programmer.
You can buy the PCB here: https://www.pcbway.com/project/shareproject/DSP_Amplifier___2_inputs_4_outputs.html
I receive a percentage of the value as credit if you buy it from this link.