Hello Southwind- I spoke with Boz, not long ago. Some of the components he used, in the build of the 2.0, are no longer available. If you did buy one, support might be iffy, and- no, the 2.0 cannot function(perform room corrections) without a computer interface. Ditto, the RCS 2.2. The TacT mods that are most popular are from MauiMods.com(http://mauimods.com/TacTAudio.htm), and VERY simple for one to do at home(unscrew chassis top, remove old board(s) or power supply, plug-and-play). AT LEAST invest in the power supply! I've been using a 2.2 for the past few years, and with the acoustic nightmare of a listening room I have(Auralex, LENRDs and all), can't imagine life without it.