no, i don’t use PT HD.. and don’t think i’ll ever need more than 8 AES as i don’t have any other outboard with AES connections except for a bricasti. .. but, yeah, both the h9000 and Lynx offer quite a bit of expansion opportunities …. i think for starters i’ll give it a shot using the AES as hardware inserts/auxes in pro tools.. that should open up some fun….