I can't speak to the 19v2, but I did own the 11v2 for a couple of years.
They paired well with my Musical Fidelity A5 integrated amp. I then moved up to the Luxman L-509x and thought the 11v2 was even better primarily for low volume listening because of the loudness feature of the Luxman.
I would think the 19v2 would be a similar case at only 85dB sensitivity.
I found that the 11v2 was a tad 'reticent' at low volumes - micro dynamics/detail were diminished. The 11v2 came into its own at mid to room filling (not loud) volumes - which explained the synergy of the MF A5.
When low volume listening the Luxman's loudness feature was just the right compensation.
ymmv - just my observations