I was trying to study the internal programs a bit using the Behringer PCB, but there are times when the al3201 locks up and I have to turn it off for a few hours to get it working again, maybe soldering wires directly to the pins is not the most accurate, in the datasheet of the v1000 there is a schematic with an ic that is dac and adc in one, which is cheaper and would be good for a development board, it will be necessary to change the part of the opam so that they work with 9v, they connect with a altmega328 and ch340 to freely load the programs, now the obstacle would be the atmel code that can load programs from the computer and can edit values with potentiometers and switches, this would give us more freedom and tap tempo, I was thinking of hiring someone to do that code but it will be later, I'm still doing homework for the university, having said all this we would be with a DSP with good characteristics for the price and we would make good delays and reverbs.