I'm am trying to daisy chain an old Firestudio 26/26 to my 1818VSL via ADAT cable. However, when I play something into the FS 26/26, it sounds what I can only describe as the audio equivalent of pixilation. Am I doing something wrong? Are these two not compatable? I am running it into the last version of Studio One 2 at 96kHz and 24-bit.