Thinga_McBob has a nice ring to it as well.
Just got my SC64 with a dedomed 5700K today! Great work, and I love this emitter. Here it is lined up against a random assortment of other lights (just the normal iPhone camera app so no white balance lock, but this should give a relative idea of the differences):
LTR: SST20 2700K (Fireflies AA) | SST20 4000K (D4V2) | 519A 5700K DD (SC64) | 219B SW45K (T2) | Cree XP-L2 4500K (SC53w) | 519A 4500K (T3) | 219F 5000K (Rider RX) | LH351D 5000K (SC21)
Here are just the 519As and 219B:
LTR: 519A 5700K DD (SC64) | 219B SW45K (T2) | 519A 4500K (T3)
In the above picture the balance makes the SW45K appear fairly neutral so it’s a good relative comparison to my 519As, but not exactly true to life (the 519A 4500K does not actually look this green).
Thanks Bob_McBob!
Are these still available? Any plans with 519a now that they are out? Do these retain the original ZL driver?
Yes, almost every SC64c LE order this year has been for 519A, particularly dedomed sm453 (~3500K). Everything stays the same, you just get a much nicer LED 
hi, b_m, ….any mods to SC64wHI with dedomed 519A?
The SC64w HI has a 12V driver, so the only options for emitter swaps are XHP35 and XHP35.2. I have a nice 4000K 90+ XHP35 HI I like for this mod, as well as 3000K and 2700K. Unfortunately XHP35.2 barely exists yet, so no decent options there.
Have you taken any output measurements on a dedomed 519a in an AA Zebra that you can share? Thanks.
Hello Bob could you modify H503 to 519A for me? 