Currently running a Digidesign Digi003 interface. Have been using it for a few years now. Prior to this one I was running a old Digi001 interface. Have always been very happy with them. With that said, I originally purchased my Digi003 with the intent on sending it out to Black Lion Audio to have them do their signature series mod to it, which from everything I have read over the years, really turns the digi003 interface into a monster interface. I never really got around to doing it though. At a little over 1300 for the mod, i just always seemed to put my money into something else, like amps, guitar, monitors, etc... well, a few days ago I stumbled across a seller on reverb selling a digi003 with a signature series mod at a great price, about half what the mod actually costs. So I jumped in. Looking forward to hearing how the upgrades compare to the stock rack. should be here early next week! For those of you interested, below is the description of what mods are done.