A couple of interesting things gleaned from emails with one of Bryston's technical guys.... (N.B. None of this is any sense binding, but I think it is probably an accurate reflection of what they currently intend). 1) There will be software upgrade in approximately 6 months time. This will add three interesting features: a) The processor will become fully THX Ultra 2 compliant. b) You will gain the ability to decode the matrixed channel in Dolby Digital EX without using THX post-processing as well. c) You will gain the ability to set a global audio delay to achieve lip-synch with progressive video sources. (I put that in bold as it's been a point of interest in a previous thread). 2) Software upgrades can't be done via RS232, they require an EPROM chip inside the unit to be replaced - but they "often" trust customers to do this themselves. 3) I asked about Dolby Headphone possibilities. The current DSP does not possess enough "horsepower"to manage this at the same time as the rest of the stuff it does, but they're planning a DSP upgrade, perhaps in the first half of 2004, probably to the TI DA610. This upgrade will require the unit to go back to the factory, and so will be expensive in this country (the factory is in Canada!) but it should be cheaper than the upgrade from the SP1 to the SP1.7 is, because it would only be the DSP that would be changing. (SP1 to SP1.7 requires two whole new channels of circuitry, a new back-plane, etc. and costs £1200 - roughly double what it costs if you're in the US or Canada).