
VIOFO - A139 Pro 3CH
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Based on 1 year's data from Feb 15, 2026 How it works
Liked most:
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"i want the best resolution camera back there, and the dual ones out there, including fitcamx, all have 1080p res. the viofo is 4k ... the last 5 cars have all had front and rear cameras, and at least 3 times we got punted in the rear, not once in the front. one time some dumbass ran in to us at the wendys drive thru. another was when we were stopped at a red lite."
"the starvis 2 sensor this has is great. I have both the older and newer viofo units, and the starvis 2 definitely makes a difference compared to the previous gen."
"I got it because of the Starvis 2 sensor which gives improved clarity in the dark. ... If anyone is driving at night I highly recommend any dashcam with a Starvis 2 sensor."
3
1
"Pro runs it with 24/7 even if truck is off"
"I also run the hardwire kit and keep my car monitored when it's parked outside my workplace."
"Been working great since I installed it just over a year ago."
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"Pro runs it with 24/7 even if truck is off"
3
1
"i want the best resolution camera back there, and the dual ones out there, including fitcamx, all have 1080p res. the viofo is 4k ... the last 5 cars have all had front and rear cameras, and at least 3 times we got punted in the rear, not once in the front. one time some dumbass ran in to us at the wendys drive thru. another was when we were stopped at a red lite."
"the starvis 2 sensor this has is great. I have both the older and newer viofo units, and the starvis 2 definitely makes a difference compared to the previous gen."
"Pro runs it with 24/7 even if truck is off"
Disliked most:
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"My Viofo A139 pro does not work on any of the cars USB-C connections tried many different cables none work ... my phone charged fine from all those USB-C connections with all the tried cables. ... When I measure the power when my phone is connected it can only pull 7 Watt."
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"but they are expensive."
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"I don't trust them anymore with their built in capacitors that died."
I have a VIOFO 3 channel camera - 4k front, 1080p rear and interior. I highly rate it - very high quality sensor for the 4k camera, especially at night. Interior camera has IR LED's so works very well at night also. The wiring is easy for the interior camera as you're generally mounting it right next to the dashcam (or within a foot or so).
I’ve had two of these burn out from heat exposure. I live in the south east US. My windshield is also tinted with 5% ceramic so I just don’t understand why it happened. I just installed the FitCam on it so let’s see how this one works.
Viofo A139 3-Channel with the hardwire kit and the sun filter - three cameras (front, rear, inside). Great quality, plus the sun filter helps crispness in daytime. Night time quality is fantastic too. And the hardwire kit let's it run as a bump camera while the car is off and parked. Not to mention the three cameras are a good thing - rear camera is only 1080p but captures decently. The inside camera is 1080+IR. Non-affiliated link: https://www.viofo.com/products/viofo-a139-pro-3ch-first-real-4k-hdr-3-channel-frontinteriorrear-dashcam-with-sony-starvis-2-imx678-sensor?variant=41181446012991&country=US¤cy=USD
Interesting! I live in the northeast and I still rock the first one i bought (that ones been installed in my equinox since i got it in april '21)
Ben destijds zelf ook voor de A139 gegaan, 3 channels, en dit dan met een losse accu tussen mijn auto accu en de camera in, al maakt dit het wel een heel stuk duurder, maar was voor mijn gebruik wel een stuk fijner. Destijds was de 139 1 van de weinige met de starvis 2 sensor, ben wel benieuwd of er niet toevallig inmiddels betere keuzes zijn.
\+1 to this as well, why I got the Viofo A139. At the time one of the first with the Starvis 2, but now there are a few.
I have Viofo A139 pro cameras. 2 are in a cars with front tint, one in a car without front protection. All are working well. These do not have caps but I have aux. battery backup (BlackBoxMyCar) for when the car is off and the cameras are in parking mode.
I have two Viofo A129 (front and rear) and a 139 (3 channel). Took last summer like a champ.
I use Viofo (specifically the A139 Pro but there are other options) and it's great. I have mine plugged into an external battery pack because I don't want to hardwire it. There's actually tons of good options now, dashcam technology has come a long way in recent years and there are some great quality cameras. There's also r/Dashcam for sample videos.
I’ve had the VIOFO 139 Pro front and rear for a couple of years now and it’s been flawless. Easy to connect to it with the phone app and view or download clips. Has parking mode if you hardwire it with movement sensor and G-sensor plus time lapse recording.
Most dashcam enthusiasts recommend Viofo and Thinkware with the STARVIS2 sensor for the dash cam of choice. You may have to look into BlackVue for push notifications, as they have some cloud services. I personally run a Viofo A139 Pro hardwired into a Powercell 8 external battery that is hardwired into driver side fusebox for parking mode. The setup is about $500-600.
Viofo or Thinkware, and any dashcam equipped with the Starvis2 sensor, are the go-to for dash cam enthusiasts when it comes to picture quality and license plate reading. The most optimal parking mode setup, but most pricey, is a 2/3ch dash cam hardwired into an external LiFePo4 battery that is then hardwired to driver/passenger fuse box. This setup will provide parking mode and reduce the wear and tear on your 12v battery. If parking mode isn't something you need, you can just to the 12v accessory socket for normal driving dash cam use. I used Viofo A139 Pro and have installed Viofo A229 Pro on family's car.
Viofo A139 Pro (~250) + Powercell 8 external battery (~350) For front/back 4k images + parking mode up to 8-10 hours without wear and tear on the 12v battery.
Houston - I have two VIOFO A229 Pro’s and one A139 Pro on my cars. No issues besides formatting the card every month or so. Running them over 3 years now
It's incorrect to assume that just because two cameras share an image sensor, that their performance will be the same, or even similar tbh. I have patents in camera testing, and to believe that firmware / software is **the main differentiator** for image quality after the sensor is totally wrong. FW/SW are important for sure, and as an example, one of the Sony image sensor developer guides I was looking at the other day had over 800 pages of potential settings, but outside of very specific applications, the vast majority of end users will keep 95% of them as Sony recommend - to the point they're simply not a differentiator between brands at any practical level. The Lens and ISP are *far* more consequential to image quality. Mechanical design comes close after that too, since they have to keep temperatures down. My A139 Pro (Sony IMX678) can't maintain 4K in warm temperatures even in Ireland, but my A229 with an identical sensor has no issues whatsoever in the California sun. As a further prime example of this, the IMX 335 in A119 V3 actually supports 60fps RAW, but the ISP, thermal management, or something else limits the full system to 30fps. Comparing image sensor part numbers alone isn't a comprehensive assessment, because other key image pipeline aspects can be limited by hardware, like bitrate or output formats. Lens MTF, chromatic abberations, distortion correction, stray light, aperture, lens alignment, and a *whole* lot more also have direct effects to image quality.
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