Originally Posted by Serge
Thanks MI'

So, The upgrade from V3 to V4 is no longer avalaible frown

Serge.

I just had a v3 upgraded to v4 a couple months ago, so it is still available, at least in the US and I assume elsewhere. It cost approx. $1,500.

Main system (when room is done): 861v4, 7 x DSP33, SW1600, Oppo, Sonos