Greetings all:
This is my first time posting on this forum, although this forum is no stranger to me as I have benefited in the past from reviews of various lights by many forum members whose knowledge and generosity in sharing their insights have impressed me. In fact, I bought the EA4 due to reviews in this thread.
I am glad to support Nitecore again with this purchase (having bought a couple of their lights in the past). The company strikes me as innovative and bold, so that deserves support. Moreover, they seem to take corporate social responsibility seriously. For example, the company describes on its website its donation of high-end flashlights to the police department and first responders of a town in CT for search and rescue missions necessitated by super storm Sandy. I think that is commendable and also deserving of support.
I have had my cool white EA4 for a few days now and think it is tremendous. The workmanship and anodizing seem excellent (although I will discuss the rattle in a moment), the output and throw are outstanding for a light of this size, and the overall appearance strikes me as elegant.
The CW tint on mine is almost pure white, although the spill on a white wall can give a slight hint of bluish purple when contrasted with a warmer tint (such as the one from my old Nitecore Extreme with the Q5 LED). This is not an issue in actual use, and overall I think that the tint is very pleasant to the eye. On a related note, as one member noted, the lens on the EA4, when looked at from an angle under lighting, does show a purplish hue, but I've observed a similar hue on the lens of many quality cameras and binoculars, so I am not sure that the hue itself is cause for concern (or indicative of the lens having been installed backwards). The hue seems to simply be a result of the AR coating.
There seems to be a slight clover-like artifact in the hotspot (as another member had mentioned) when projected on a wall a short distance away while the light is in the lowest mode. However, at the two highest modes the artifact seems to disappear, or it may be that my eyes start to shift out of focus due to the intensity of the beam.
Again, this is not an issue in real-life use as whatever artifact there might be is simply not noticeable when the beam is projected onto objects in the distance. Also, I don't expect the beam pattern of a deep, smooth reflector designed to maximize throw as in the case of the EA4 to be the same as that of an orange peel reflector designed to balance throw and flood.
The UI of the EA4 took a little getting used to, but once I got the hang of it, it seems brilliant. The switch seems to provide a good balance between tautness (for distinguishing the two stages) and responsiveness. I also love the blue ring of light around the switch. Not only does it allow me to quickly spot the switch in total darkness, it also counts out the remaining voltage in the batteries when those are installed or when the light is put into lock-out mode. For example, when I inserted a fresh batch of eneloop batteries into the flashlight, the blue light first shone 5 times in quick succession and then, after a one-second pause, shone twice more in quick succession, which indicates a combined remaining voltage of 5.2 volts in the batteries.
Like many others, I wish the light had a lower low (say about 10-20 lumens). I also wish that the lock-out can be undone by 3 quick presses, as opposed to one long hard press. However, those are really minor points.
I had been blissfully unaware of the rattling sound inside my light until I read about it in this thread.:huh: Upon shaking the light, the rattling occurs regardless of whether or how I am holding down the switch, as several forum members also noted. In that respect, our experience is not consistent with the reply by Sysmax earlier in the thread. I am glad that the switch is not the source of the noise, as the former is already being asked to do a lot, and I would be concerned if it is not built nice and tight to handle the job. I also don't think that a loose reflector is to blame for the noise as, upon close scrutiny, the rattle seems to emanate from a location inside the light just beneath the emitter.
Sysmax, if you come upon this post, I hope that you can shed some further light on the rattling noise. Since some members have experienced it in their lights but others have not, I imagine that the rattling sound is not a function of a design feature of this light. If Sysmax can assure us that the rattle is not a sign of some issue that might develop down the road, then us flashaholics can put our minds at ease, and concentrate on enjoying this light. If, on the other hand, the rattle is indicative of a manufacturing defect, then I imagine that Sysmax would want to make things right for its customers. The company has invested way too much work in cultivating an excellent reputation and loyal international following to not fully address this issue once it has been made aware of such issue. Thanks.