Emisar D4S review

Anyone know if D4Ses with SST use the firmware for XPL or the throttled version for 219C?

It shouldn’t be using the same firmware since it has a higher VF, and will draw less current.

You can check some beamshot comparisons:

Emisar D4S (XPL-Hi V2-3A) vs Sofirn SP36 (4x XP-L2)

Sofirn SP36 (4x XP-L2) vs BLF Q8 (4x XPL-HD)

Sofirn SP36 (4x XP-L2) vs Sofirn Q8 (4x XPL-Hi)

The Sofirn Q8 is the most throwy, followed by the BLF Q8.

I would say the SP36 is slightly less throwy than the BLF Q8.

While the D4S (XPL-Hi) seems to be almost at par as the SP36, probably just a bit less throwy...

I was thinking in terms of which version of Anduril I should flash. I don’t see an SST version.

Well, I received my D4S with the SST-20 5000k.

It does have a light green tint to it in moon mode, that gets whiter the brighter it gets. And I cant say with complete confidence that all the green is gone at full power, but its real close.

It sure throws better than the XPL-HI 5000k, perhaps adding close to a hundred yards in throw.

And it has better definition than the HI, to me. I am able to see texture on trees and stuff that I can not with the HI. Could the greenish tint help?

After all is said and done, the SST-20 is my new fav out of the Nichia, the S4 3D and the XPL-HI.

Of course I may prefer the S4 3D 4885k in thick timber, which I have not had a chance to try out yet. I hate light reflecting back into my eyes, it blinds me somewhat and is a distraction. With the reddish tint, I notice very little reflection.

I hope this helps someone.

Thanks, helped a lot to see that I made right decision :wink:

And maybe saved $15.

Thank you for your feedback learningtofly it comfort me too in my decision.

Did you notice a big difference in heat generation between the XPL-HI 5000k and the SST-20 5000k?

The standard version. You only need to use the 219c version for 219c or low Vf emitters like maybe an XP-L2 if that were offered.

Standard version goes to 100% FET
219c version goes to 80% FET

I ordered from Hank:

Emisar D4S 26650 High Power LED Flashlight
Color - Grey (smooth surface)
Aux LED - Red
Led & Tint - Neutral White - SST20 4000K 95CRI

There pretty close, but it feels the HI gets a little hotter.

So I have a question: I just received my d4s (black, D4S SST20/5,000K, red aux) and in comparison to my 2 d4 flashlights the LEDs do not line up real well under the TIRs…. it makes for an oblong beam on one end…… Is this normal for this config? Am I being too picky?

I ordered the exact same D4s setup you have, will let you know when I get it if its got the same issue.

No, that doesn’t sound right. It shouldn’t be oblong.
Shoot Hank an email or PM.

My D4S sst20 have a completely normal beam.

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My D4S sst20 have a completely normal beam.
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Yes, mine has a well defined, round hotspot.

I’ve actually received lights that Custom’s apparently disassembled and didn’t put back together right. The worst was a Mateminco X6s triple, they let the triple optic shift completely off the emitters and the bezel wasn’t on properly of course. Crazy stuff happens out there!

I thought it would be the opposite, XPL-Hi 5k seem to be the more efficient option for the heat, but i'm glad to hear your feedback!

If the SST-20 5k is at least close in heat generation it's perfect for me.

I got my d4s sst20 5000k today and its great. The highest 3x 7135 mode is very nice.

One thing I noticed. from moon to highest 3x 7135 the light has a very nice yellow/very slight green tint. When ramped above the regulated current the tint really gets whiter. Can it be that the pwm got anything to do with it. Its a pretty big difference and its perfect for me. Like high cri on the low and low on the high mode.

LED tint changes depending on the power level.

This is generally most noticeable on a FET+N light with a relatively low “N” and a relatively high FET level. I try to reduce the effect by blending channels, but there’s only so much it can do. Without the blending though, if I set the FET channel to exactly the same lumen level as the +1 channel, and alternate between the two, it causes the color to change while the brightness stays the same:

The light on the left is just there for reference. On the right is a BLF-A6 which changes tint every half second by changing which power channel is active… yellow, blue, yellow, blue, yellow, blue.

Maukka has also measured this effect in great detail, in most of his reviews. Look for his charts showing where the tint is at different output levels.

Very intresting and exactly what i meant in my light. I actualy really like it! Does the sst20 have more output on the 3x7135 level than the xpl hi?