{"id":155616,"date":"2021-12-06T12:34:18","date_gmt":"2021-12-06T17:34:18","guid":{"rendered":"https:\/\/www.gunsamerica.com\/digest\/?p=155616"},"modified":"2025-11-03T05:36:38","modified_gmt":"2025-11-03T11:36:38","slug":"hunt365-atn-thor-4-long-term-review","status":"publish","type":"post","link":"https:\/\/gunsamerica.com\/digest\/hunt365-atn-thor-4-long-term-review\/","title":{"rendered":"ATN ThOR 4 640- Godlike or Gimmick? Long Term Review"},"content":{"rendered":"\n
\"ATN<\/figure>\n\n\n\n

Thermal optics have been gaining popularity amongst hunters and outdoor enthusiasts over the last decade. Advancements in thermal imaging technology have brought the costs down to a more affordable level. You can still find thermal scopes with a five-figure price tag, but ATN has a wide range of options from $999 – $4,799. Pricing is largely determined by which thermal sensor and lens options you go with. You can select the optic<\/a> that best suits your needs and typical hunting situations.<\/p>\n\n\n\n

<\/p>\n\n\n\n

For the past 18 months, I\u2019ve been using the ATN (Thermal Optic<\/a>, Rifle) ThOR 4<\/a> 640 2.5-25X which was sent to me for this review. I was a bit skeptical at how the ThOR 4 was going to perform after reading mixed reviews online about other ATN digital scopes. My attitude immediately changed after getting it in hand and looking through it for the first time. I haven\u2019t had a completely trouble-free user experience. But overall, the reliability of the ThOR 4 during my use has been almost perfect.<\/p>\n\n\n\n

\"ATN
The ThOR 4 has spent the most time on my home built 7.62×39 AR hog gun. <\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

The ThOR 4<\/a> uses ATN\u2019s latest 4th<\/sup> gen Obsidian Dual Core 640×480 thermal sensor with a 60Hz refresh rate and a 1280×720 HD display. The result is a super crisp thermal image with a claimed detection range of 1,950 yds. With regular use and practice, it\u2019s easy to identify deer and coyotes out to 400 yards. The 60Hz refresh rates means you can scan and shoot targets on the go and the image will remain smooth with no shuttering or lag.<\/p>\n\n\n\n

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\"ATN
Looking through the viewfinder is clearer than the photos saved. The feeder is 125 yards away at 3.2x magnification. The details are incredible.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Nothing compares to hunting at night with a thermal scope. Being able to detect and spot animals in complete darkness presents a lot more opportunities than using traditional night vision or spotlighting setups. It\u2019s also just as useful during the day at detecting heat signatures behind brush or cover that you wouldn\u2019t normally be able to see. The ThOR 4<\/a> 640×480 delivers highly detailed images comparable to those twice it\u2019s price, with better battery life and way more features.<\/p>\n\n\n\n

Specs:<\/p>\n\n\n\n

Sensor: Obsidian IV Dual Core 4th<\/sup> Gen 640×480 (<25 mK)
Magnification: 2.5-25x
Field of View: 12.5×9.7 degrees
Display Resolution: 1280×720 HD Display
Eye Relief: 90 mm
Tube Size: 30mm (Standard Rings Included)
Battery Life: 16+ hours
Weight: 2.2 lb
Warranty: 3 years
Weather Resistant
HD Photo and Video Recording 1280×960 @ 60 fps with Sound
Recoil Activated Video
Ballistic Calculator
WiFi Streaming and Controls through Obisidian App (Android and iOS)
Bluetooth Capabilities
Electronic Compass
Multiple Color Palettes & Reticle Options
Pixel Correction
SD Card Slot \u2013 Supports up to 64 Gb.
MSRP: $4,299

<\/p>\n\n\n\n

\"ATN
ATN provides everything you need to get started shooting immediately. <\/figcaption><\/figure>\n\n\n\n

In the box you\u2019ll find an assortment of accessories to immediately get started \u2013 scope rings, charging cable, soft zipper case, and a rubberized eyeshade cup. At the front of the scope is a focus ring for adjusting the thermal image itself. It\u2019s easy to manipulate and feels smooth. I haven\u2019t had any issues with the focus ring moving under recoil. The eyepiece also has a focus ring for the reticle and menu options. On the left side of the scope is a circular scroll wheel used for zooming, zeroing, and selecting menu options. The right side has the USB-C charging port, and MicroSD slot which are both covered with rubber flaps.<\/p>\n\n\n\n

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\"ATN
The control pad is easy to use and hasn’t shown any noticeable wear over the 2 years I’ve had it.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

A control pad sits on top of the scope featuring 4 easy to use buttons. They are clearly marked and labeled with quick functions. Click the center OK button to access the scope menus. Although there are a lot of menu options, they are easy to navigate and understand. I would highly recommend spending at least 30 minutes playing with the menu screens just to familiarize yourself with how it operates. I primarily use the settings menu to access the thermal sensitivity, color palette, contrast settings, and display brightness. You\u2019ll also find multiple reticle options. I prefer the traditional crosshair setup in red. Once you set your reticle and color, the other menu options are for specific situations or pairing with other ATN devices.<\/p>\n\n\n\n

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\"ATN
Strange they use two different screws for the USB-C and MicroSD ports. Nonetheless, they have been trouble free.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

I charged the scope overnight before mounting to my rifle. Oddly enough, there is no charging indicator light or status screen that pops up when charging. The only way to know it\u2019s charging is turning on the scope and seeing the lightning bolt charging symbol in the upper right-hand corner. It\u2019s safe to say if you charge it overnight, you\u2019ll be good to go. Using the supplied mounts, I got the scope leveled and installed on my hog gun. I\u2019m running a Hardened Arms 7.62×39 upper and a Spikes Tactical lower. The factory mounts are not the best and I highly recommend replacing them with a sturdier set. During my testing, one of the screws stripped out of the factory supplied mounts.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
The ThOR 4 is HEAVY. You won’t be taking many free standing shots with this setup. Shooting sticks or bipods are a must.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

At the range, you have the option of setting up shooting profiles for different guns or different loads. You can have up to 6 different profiles. Zeroing the ThOR 4<\/a> is simple using ATN\u2019s \u201cone shot zero.\u201d But first you need to make sure you\u2019re using either a specialized thermal target or use an object that will show a heat signature – like hand warmers, cold water bottles, or even foil tape. Without this, you won\u2019t have an aiming point on the paper target. Pick your aiming point and fire a few shots. Verify with your spotting scope or binos to where they\u2019re impacting. Head to the zeroing function in the scope menu. Use the top directional buttons to move the reticle to where the bullet group is. Save your settings and now the gun is zeroed. It\u2019s simple and fast if you\u2019re on paper to begin with. I have had a frustrating afternoon or two chasing down impacts when switching from the 7.62×39 to 5.56.<\/p>\n\n\n\n

The ThOR 4<\/a> has held zero well until the rear scope ring screw stripped. I noticed a zero shift and found the screw was loose and somehow stripped out. Since changing mounts I haven’t had problems with zero shift.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN<\/figure>\n\n\n\n

<\/p>\n\n\n\n

The next weekend I packed up for the ranch to stretch out the ThOR 4 and see what it could really do. Located in the Texas hill country, the land is covered with thick brush making it difficult to hunt at night without thermal optics. While the ThOR 4<\/a> has several color palettes to choose from, I typically stick with white hot or black hot options. If you want to go predator mode, that\u2019s available too. Eye relief is generous and I only use the rubber eyepiece when using it unmounted. <\/p>\n\n\n\n

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\"ATN
Base 2.5x magnification. Top of hill in the background is 1,400 yards away.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Sitting on the south hill looking north towards the other side of the property is 1,410 yds. The ThOR 4<\/a> was able to see the entire hillside with extreme detail, but I didn\u2019t see any heat signatures. We then moved to the north side, now looking south towards our previous position, and placed a buggy at the halfway point. Once on top of the hill looking south, the buggy was easily identifiable at 700 yards. I could also identify 3 deer. Two were standing at around 875 yards and the third was up the south hill approximately 1,000 yards out. The image below is at 10x magnification. One thing to note about thermal zoom, at this point its just digital zoom and not optical. The image quality severely degrades as you zoom in.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
UTV seen at the bottom (700 yards) . Deer on the right side (875 yards) and middle of screen (1,000 yards). 5x magnification<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Moving about the property we went to different feeders searching for hogs. The entire time I leave the ThOR 4<\/a> on and you can occasionally here the shutter refreshing the thermal image. The power button also doubles as a refresh in case you need it on the fly. I do have the standby set to come on after 15 minutes of inactivity. <\/p>\n\n\n\n

Looking at the feeders its easy to see how much protein or corn remains. It beats having to lower the feeder or banging on the side to check the levels. Just another benefit of having a thermal. You can also spot mice jumping around at 100 yards. <\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
The feeder on the right is about half full. Photo taken at 125 yards 3.0x magnificiation.<\/figcaption><\/figure>\n\n\n\n

One of the guys at the ranch has what many consider to be the gold standard of thermals \u2013 a Trijicon Reap-IR 35mm. This was also the first thermal I hunted with, and the picture is superb. However, both of us agreed the ThOR 4 produces an image on par with the nearly 2x as expensive Reap-IR. <\/p>\n\n\n\n

Let\u2019s be clear, I\u2019m not directly comparing these units. Putting them side by side the picture is not all that different and certainly not twice as good as the price would indicate. They serve two totally different purposes and are in two different classes. The Reap-IR is built to get you through a warzone. The ThOR 4 wasn\u2019t intended for that.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
Doe fawn at 60 yards. Base 2.5x magnification. Feeder is 100 yards away.<\/figcaption><\/figure>\n\n\n\n

I\u2019ve had the chance to use the ThOR4 throughout multiple seasons and conditions. The image quality degrades slightly during extremely humid conditions or the pouring rain but detecting heat and hunting are still doable. The image just gets slightly grainy but adjusting the contrast and thermal sensitivity settings can help with that. The clip below was recoil activated video, shooting a hog at 110 yards during a 90-degree humid summer evening at 10x magnification:<\/p>\n\n\n\n\n\n

<\/p>\n\n\n\n

After using the ThOR 4 for nearly 2 years, I can say that the scope reliability has been almost perfect. Last December, I was out hog hunting in east Texas during some of the coldest temperatures of the year. It was sleeting and 28 degrees outside. The image froze, so I power cycled the unit. When it powered back on, the image still wasn\u2019t coming through clear then it froze again. I packed up early that night and returned home the next morning. Back at my desk the ThOR 4 was operating normally again so I decided to check on the firmware status and noticed an update was available. Since the update, I\u2019ve used it in below freezing temps without problems.<\/p>\n\n\n\n

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\"ATN
Base 2.5x magnification at 75 yards.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

The advertised battery life I\u2019ve found to be accurate. The longest I\u2019ve been hunting was 12 hours during a 2-night hunt and I still had battery remaining. I\u2019ve let the ThOR 4<\/a> sit for as long as 2 months without using it and the battery holds a charge well. It\u2019s great being able to leave the scope turned on during the entire hunt. You can also use the USB-C connector to hook up any external battery bank to power the ThOR 4 in a pinch.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
Small doe fawn hiding in the dense cover.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Overall, I have no complaints with the build quality and performance of the ThOR 4 640. The 2.5x base magnification has a bit too narrow field of view for my preference and hunting setup. I would prefer the 1-10x ThOR 4 640 for its wider field of view. The 2.5x lens makes scanning and panning in the UTV challenging. A thermal monocular would be ideal for scanning on the move and then use the ThOR 4<\/a> for a closer look. The 2.5-25x lens would be best suited for wide open plains or scanning across ridgelines. <\/p>\n\n\n\n

Build quality of the scope itself is great. I’ve had no problems riding around with it for hours holstered in the UTV. It has taken a spill or two and the scope was unharmed. The body seems to be well sealed and has seen multiple rainy nights. There is a slight bit of surface rust that formed on one of the rearward facing screws. A quick scrub with a q-tip dipped in CorrosionX took care of that. <\/p>\n\n\n\n

The provided scope mounts are good enough to get you going, but need to be replaced for long term use. I stripped one of my screws and they are not very durable in general. <\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
Giant buck bedded down. You can still see the outline of the antlers even though they are ambient temperature.<\/figcaption><\/figure>\n\n\n\n

The mobile application hasn\u2019t worked well for me. I tried using the Obsidian app on my Galaxy S9 but it was one of the glitchiest apps I\u2019ve ever used. Every time you would try to import a photo from the gallery the app would freeze, and you\u2019d have to power cycle the scope. The remote viewing feature would occasionally work, and it was fun to be able to see what the shooter is looking at on your mobile device. Now I just download them from the microSD card. The recoil activated video is reliable if you remember to enable it in the menu and hit the record button.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
This picture shows a buck in velvet. You can see the heat signature coming from his antlers. The buck is 600 yards away, magnification 10x<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Some features on the ThOR 4<\/a> I\u2019ve never even used like the ballistic calculator and weather functions. I\u2019m sure they are great for those who need them, but I\u2019m rarely shooting anything outside of 150 yards at night. The app and additional cludgy features aren\u2019t necessarily deal-breakers for me. I\u2019d buy the scope for its thermal performance and how well it holds zero. Not the mobile app or ballistic calculator. At $4,299, the ThOR 4 offers more standard features and performance than others in its price range making it one of the best valued thermal scopes available.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
My pipes burst last winter and I was able to find the leak with the thermal. You can see the wall cavity is darker where the water leaked down.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Outside of hunting, I\u2019ve used the ThOR 4 to help detect air leaks around my house during winter and it helped me locate a burst pipe during the winter freeze. There are several miles of bayou surrounding my house where I\u2019ll often walk with the thermal allowing me to spot owls and other birds at night. Scouting and tracking is much easier with a thermal. One big downside to using a thermal, it kills your natural night vision. Which doesn\u2019t really matter to me since I can locate anything with the thermal and use a spotlight if I want to see it better with the naked eye.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
A great horned owl roosts along the bayou behind my house. He’s always fun to see. *Not mounted on a firearm*<\/figcaption><\/figure>\n\n\n\n
\"ATN
Photo taken with iPhone 12 pro. 3 second exposure. 10:30 PM.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n\n\n\n

I\u2019m sad to finally return the ThOR 4<\/a> after such a long time. It\u2019s proven to be a useful tool in the field and at home; it\u2019s just plain fun to have. My nighttime hunting success has easily doubled. If I wasn\u2019t finding hogs, it was rabbits or other varmints. There was always something to see! Yes, there are a few gimmicky features, but the ThOR 4 gives users Godlike abilities to reveal what wants to be hidden. <\/p>\n\n\n\n

Learn more about the ThOR 4 640\u00d7480 on ATNs website<\/a><\/p>\n\n\n\n

Additional photos:<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"ATN
*Not mounted on a firearm* It’s easy to see which cars have been there for a while and which ones just parked. Can you see the cat by the truck? <\/figcaption><\/figure>\n\n\n\n
\"ATN
A Great Blue Heron looking for a late night snack.<\/figcaption><\/figure>\n\n\n\n
\"ATN
Ducks at the neighborhood pond.<\/figcaption><\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Thermal optics have been gaining popularity amongst hunters and outdoor enthusiasts over the last decade. Advancements in thermal imaging technology have brought the costs down to a more affordable level. <\/p>\n","protected":false},"author":52,"featured_media":155618,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_specdata_upc":"","_specdata_placement":"","footnotes":""},"categories":[1220,7,577,4322,109,1217,1224,47,878,992],"tags":[2028,1859,1267,1411,804,1067,3080],"featured":[4083],"hunt365":[4089],"class_list":{"0":"post-155616","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-huntgear","8":"category-gunsamerica-authors","9":"category-c-travis","10":"category-gear-optics","11":"category-gear-reviews","12":"category-hunt365","13":"category-optics","14":"category-gear-optics-sights","15":"category-gear-optics-sights-scopes","16":"category-specialty-publications","17":"tag-atn","18":"tag-gear-review","19":"tag-hunt365more1","20":"tag-hunting-gear","21":"tag-night-vision","22":"tag-riflescopes","23":"tag-thermal-optics","24":"featured-row5","25":"hunt365-hunting"},"yoast_head":"\nATN ThOR 4 640- Godlike or Gimmick? 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