I'm currently looking into buying one of those nice looking, fanless NAS from Qnap. There is both an ARM as well as an x86 version available (HS-210 and HS-251).
However, I was unable to find any information on the Qnap site whether those devices also support TVHeadend. Is there a way to get TVHeadend running on those devices with USB DVB-C and DVB-S tuners?