absolutely! I have updated all of my D1 and D1s with the 7.5amp Linear drivers and they're great. No FET needed, they push osrams, sft40 and xpl-hi really nicely!
The last few batches of the D1 came with the D4V2 driver from Hank directly
just ordered my first emisar light :)
D4V2Ti COLORFUL (Blue Wavy Clouds)
Cyan Switch back light
raised switch ring
519A 3500K dedome
Boost driver upgrade
which battery would you guys recommend? is the 10A drain on NCR18650GA enough?
Yes it’s fine, it’ll draw slightly under 10A max.
I would buy the d1 and d1s again
Man, I had such a hard time letting my D1 go last year. I’d love to see an updated version. I’ve been asking for a D4 sized single emitter light for years.
D1 if offered with a boost driver, 519A 4000-4500k in green is on my list. Hopefully Hank brings back the original Emisar green.
On another note, I have a boost driver D4 with a lighted switch. I noticed that when ramping the switch brightness goes from low to high. In Anduril that used to correspond to cutover points from regulation to FET, but what does it mean on a boost driver?
It does that with linear+fet also.
Right, it signifies when you move out of the regulated section. What does it mean on a boost driver which has no FET?
Linear driver has regulation for whole range also, except turbo. I didn’t mean 7135+fet driver.
A single 519A would not work with a boost driver. B35AM would be a good alternative with similar color properties if you want a boost driver.
That switch LED brightness change happens regardless of the driver type. On fully regulated drivers it does not mean anything.
Ah, rats, maybe I was thinking of a buck/boost like what Skilhunt or Zebralight does? Or are they just CC like Hanks newer non 7135 based drivers? I sort of lost track of driver understanding when the newer regulated drivers came out.
B35AM would be cool, or XHP35/50/70.
The current 3V drivers are linear+FET , but with discrete component instead of 7135 chips, higher regulated current and no PWM, and boost : 2A12V for most configurations and 3.6A6V for B35AM.
Zebralight used to have buck-boost drivers but now they use buck for 3V LEDs.
I would love to see the Emisar green come back for the new D1, also!
Hank, any updates on D1v2?
More info about & a pic of D1V2 from Jackson Lee. Looks absolutely gorgeous.
Hank, will these be called “New D1” or “D1V2”?
(same pic id30209 posted a link to, just embedded this time for easy viewing)
No SST-20 for high CRI high throw 
Hank, will the the D1v2 be available in gtfc40?
The D1v2 looks great! However, it seems like a missed opportunity not to have an RGB switch like the K1. With a reflector and no AUX, it would be nice to have the switch represent the voltage/temp/etc., and I think the driver should have the extra pins to allow for that. Although not sure how hard it would be to wire in the small host… Maybe something for a D1v3 