@nitrobob Congratulations on what sounds like a great system! I had Caliber XDs stacked on 2 Foundation subs driven by Wavelet before I went up to Valor and the results were both earth-shattering and musically fantastic. The subs require good break-in to sound their best, 250+ hours and they are even tighter, more impactful, graceful and musical then straight OOTB.
As I understand it, the i.V2 may be at Ultra build level by its design (check with Legacy).
For the other Ultra models, instead of using one 1200AS2 stereo board as I understand it to drive 2 channels (so 2 boards in a 4ch, 3 in a 6ch and 4 in an 8ch), the Ultra doubles down and uses an entire 1200AS2 board to drive a single channel. The results are noticeable for 2, 3 and 4 ch listening, dynamics, etc. I'm a customer and have learned as I proceeded up the line so please check with Legacy for all details.
As I understand it, the i.V2 may be at Ultra build level by its design (check with Legacy).
For the other Ultra models, instead of using one 1200AS2 stereo board as I understand it to drive 2 channels (so 2 boards in a 4ch, 3 in a 6ch and 4 in an 8ch), the Ultra doubles down and uses an entire 1200AS2 board to drive a single channel. The results are noticeable for 2, 3 and 4 ch listening, dynamics, etc. I'm a customer and have learned as I proceeded up the line so please check with Legacy for all details.