My experience has been very different. I bought an RCS 2.2x a few years ago in the UK, and after a few months one channel failed. This was repaired under warranty - there was a UK presence at that point. I've been using it in 2.1 mode, but 6 months ago moved to 2.2 mode. to find that one of the subs channels was dead. So far Tact has completely ignored my enquiries on service, so support does appear to be non-existent.
I did have some email correspondence with Boz over my attempts to get a serial to Ethernet connection to the RCS (the RCS uses a serial connector to link to the master PC) so he does exist. However, he's been totally silent when I ask him about servicing the unit. Maybe the equipment is so reliable that it seldom needs repair, but if it does you're on your own, from my experience. So ask yourself - do you want to pay the money TacT asks for and not have any manufacturer support when needed? I for one will not buy any more TacT equippment.