Hi Drew, I have been using a Focusrite Firewire Pro24 for a year now. Works like a charm under Tango Studio (Jeremie Jongepier helped me to configure some audio and priorities aspect) and the FFADO driver. I note but this minor problem: I have to launch Jack twice, as it first complains about a ressource to be busy (or something). Not too much of a problem, I got used to it. Once launched, everything is OK. HTH, Yvonnick Noel