I would like to clarify as some people are asking about the differences between the FPGA version of Qsound and the original Qsound. Logically the amount of original Q sound chips that I could get was limited to what I could find from distributors, but there is no more stock now. The version of the FPGA is working exactly 100% the same and the reason for that is because the FPGA has implemented a core of the DSP16 chip and has a external ram that allocates the code that we want to run. Have you seen that concept before? Of Course! Because the code that the FPGA runs has been created by Jotego himself! and can run any DSP16 code. People will need to load the code themselves for obvious reasons, but this is only done once.
If you see more chips in the FPGA version, it's because it's newer technology, some level shifters needed to be added for the 3V <-> 5V transition and also the FPGA needs a bitstream and a code to run (both located externally).
the core from Jotego works perfectly and after weeks of fine tuning we were able to confirm the 100% identical behaviour and output.
I hope this clarifies things.