The 219c versions have all FET modes, including turbo, reduced by 20%. This was done at Emisar’s request because people were having LEDs burn out on turbo. It was actually pushing too much power for the 219c 90CRI emitters to handle.
So, instead of 100, turbo is 80. And what used to be 10% on the FET channel became 8%. All FET modes are multiplied by 0.8 on that version.
Thank you for catching my mistake, zeroflow. I’ve edited my post and removed the sentence you quoted.
Does the XPL version still go 100% full blast? Or is it 80% as well?
Only the 219C version has its power limited. Everything else runs at full power.
are there different consumption on the aux leds? I read some pages ago that the green ones where more powerfull but I never found out if it measured higher usage or what. I thought that red ones must be good to have because of night vision but if green is more powerfull with same consumption it’s tempting to get a “hulk” D4S (green with green aux).
Who cares ;), get the green hulk. The green is fantastic.
But the red is so nice also 
Look a few posts above I’m afraid that the answer is to get both lol
Violet would hint as Hulk’s pants.
Just an idea.
I’d like to see the amber LEDs in a grey or green body, in case I want to get another D4S. I started a thread for people to show off their D4S with LEDs, so maybe we can get the full set posted there.
Hot pink aux lights and body for t’wife?
Nah she’d stand out too much in “the dangerous place” and probably die 
I’ll have to hold it at shoulder height or they will be thinking BLF’s first radioactive member will be coming down the snicket.
I mean the wife will have to hold it at shoulder height 
Well, that was easier than expected 
I followed advice from BLF forums for the kit, pin mappings, avrdude, and firmware (thank you Toykeeper). I used some 5 Amp fuse wire in the end of the connectors. Now I’ve got Anduril on my D4S.
My thanks to all of you who have been so helpful on this forum.
So which one of the VIA layouts is the final one? the 2x3 or 1x6 ?
Had to make a new “adaptor” for the 1x6 layout
Luckily the via distance still matches a breadboard, so i plugged them in, in the correct order and hot glued them in place.
I’ve got a grey with amber in the mail right now. Second to my black/cyan.
You know I was thinking this earlier… For myself though, haha. I honestly like pink LEDs, and I think pink in green would look good. Or pink/black.
From what I've read, the 2x3 was on the first prototypes and on the first batch of lights sold by intl-outdoor, and the 1x6 is on later batches and on those sold by mtn electronics.
But there has been no clear confirmation which one is the new one and which one is the old one, but I like that he uses a 100mil spacing. The 2x3 also had 100mil on the 3x side but the two groups were off by a bit.
1. What is the purpose of the auxiliary LEDs?
2. Would it be possible (at the factory) to implement neutral white auxiliary LEDs and use them for a functional micro-lumen moonlight mode? I want neutral white moonlight below 0.5 lumen.
3. Is the D4s intended to be a replacement for the D4, or merely an additional product offering? I really like how tiny the D4 is, and I don’t want to go bigger in an EDC. I would like to see the improvements made to the D4s applied to the D4.
1. It does the same thing as tritium vials… only better. It looks cool and it helps locate the light in the dark, mostly.
2. If a color isn’t offered on Intl-Outdoor.com, it’s not available. But you could replace the aux LEDs with other types if you want.
3. The D4S is not a replacement for the D4. As for the new things the D4S has, Hank might update his older products with newer ideas at some point, or he might not. It’s hard to say for sure. He has already updated the D4 a few times though, and it seems to be a pretty popular item, so I wouldn’t be surprised to see more updates in the future.