Thanks for the test. I like what i see!!! So the Q8 with VTC6, mod ledboard and SST-40 P2 Bin will draw something about ~30A. Maybe even more. :smiling_imp:
The low Vf is really nice! The low CRI is not so. But i am curious how much output the Q8 would get with the P2 Bin SST-40? 8000+lumen?
Aside from the low CRI how does the light look? Is the beam ringy with color artifacts like the newer crew emitters, or is it fairly consistent?
Iām sorry to say I donāt know, I had 2 emitters, one died in the test, the second was dedomed. The dedomed tint is towards a bit yellow, but a good tint, a quite uniform hotspot with a very thin blue-ish edge around it. Nothing of the problems of the new Crees.
One thing I seem to notice is that the led has a large tint shift going from low to high current, the good tint only happens at highest modes when the BLF driver mainly uses the FET.
Wow, impressive graph!
7.5 Amperes seems to be sweet for this thing, at only 3.6 Volts. !
Thatās 27 Watts, but ājustā a bit under 2300 Lumen.
2000 lumen at around 20.5 Watts though.
Happy to hear the tint looks decent. I have one coming with my next order, got it just to play with, but Iām quickly thinking of uses.
Thanks for the most excellent analysis. :+1:
Sounds like this may be good to upgrade my Supfire m6 with
Thanks for the detailed rundown of this emitter. I got a itch to have a light with each worthy emitter, and I think this would be a good one.
Iām actually a fairly big fan of the SST-50 for itās efficiency. At higher amps itās heat can be a problem but for running at low amps it does a wonderful job. One of the lights I use most often is a cheap sharp eagle zoomie with a de-domed SST-50 in it. At low amps itās still fairly bright and a good 26650 seems to go forever without needed a re-charge. I donāt have the equipment to test it but I always suspected that it must be VERY efficient at low amps. Too bad they are so pricey.
But good news on these new ones. Iāll have to get my hands on a few and see what I can do with them.
Either youāre very wrong or fonarevkaās calculator is:
(click ācalculateā button under that url)
SST-50 is not efficient, not at all.
Impressions are never āwrongā 
I just received five SST-40 from this seller on Aliexpress, they turned out to be the real deal. There is of course no specific information about tint/bin but with my unscientific testing they seem on par with the one I bought from KD.
There is also a bit of green in the lower modes just like the one from KD. The MCPCBās is not very good but that didnāt come as a surprise. The price has gone up a bit I payed $1.69 a piece.
Nice, Iām always a little leery of buying emitters for aliexpress, but they have done pretty well with flashlights and other things. One thing about them, if you order from them and they donāt come through, you get your money back, no problem.
Nice, the AE seller is really cheap.
And some nice dedoming you did there!
After luminarium iaculator revealed his metode in this thread and I happened to be in Italy so I could buy the āmagicā fluid they turn out great every time 
Put my SST-40 from KD in a Convoy M1 with a MTN-17DD fet+1 driver and I Really like it. The tint almost has a purplish color to it at higher amps, but not in a bad way, very pleasing to the eye, especially for low CRI.
Hey can you show us the sst40 dedome beamshot?? I donāt mind about the camera qualityā¦ you can use postimg.org for loading. Thanks.
I would, but mine is not de-domed, just installed as it came from the factory. Beam looks almost identical to a typical XM-L2 in the M1.
Tempting LED in all, but would be nice to have higher brightness bins available somewhere (for EU).
Still, 2000 Lumen at 20 Watts at 3.6 Volts and 5.6 Amperes is very nice.
Nice find. Thanks for sharing.
I got some from Arrow too: 7500k the highest bin,
The main difference is: when properly dedomed( its not that easy though, at least those samples) The tint didnt shifed much, like only 1000k or something , thus resulting in the best cool white tint( accoarding to the BLFers), like 6000k 1D or so, paired with an the AR glass even i like it.
I tried keeping it at about 7, 7.5 amps tops, to awoid burn-outs
Paied with a good fed dd driver it resulted at arround 2050-2080 lumens( at 7 amps) WHEN DEDOMED, measured with my spectrometer, candelas ( in most knows hosts) are as follows
C8 - 162000
X6 - 108000
L2 - 315000
B158 - 269000
I`ve modded a M3x torch with it too, using a boosted default driver at 7.1amps and it ended at 335k candelas
A very good emitter, especialy if you aint at a good cool white tint after dedoming, simmilar or even an idea better than W2-W3