Just wanted to say I'm loving the new blue. It's strange how 640 seemed to be so deficient vs the 532 at full power, but using the 445 as the blue I've got a very very nice icy white with ~500mw of 532, ~400mw of 640 and 1 amp input to the 445 through a flexmod (no power meter yet). Heatsinking is passive, in an o-like module and electrical taped to a block of aluminum, doesn't even get warm.
Colours were warmer in appearance before, but so much more intense now Many of the darker colours seem to have an almost fluorescent effect.
Now, I have to figure out whether to try to sell the 473 or buy a 6 channel dac