VIOFO A139 Pro vs. Vantrue N4 Pro 3-Channel 4K
Dash Cam Comparison Review

First to talk about is the form factor of these two dash cams. The VIOFO A139 Pro is a three-channel dash cam that’s built without a screen, so it’s easier to hide behind the rearview mirror. Its front unit has a 140-degree FOV lens that can also be rotated vertically up to 300° for greater coverage, adapting better in different car models for optimal positioning. Its secondary dash cams, the interior and rear cameras are also designed small, and discrete.

On the other hand, the tubular-shaped Vantrue N4 Pro is much bigger than the A139 Pro, and is built with a 3-inch screen where you can watch your dash cam footage. Its interior-facing camera is also in the main unit, right beside the screen, limiting your mounting options as opposed to the separate interior camera of the A139 Pro. The N4 Pro has a magnetic mount that hangs below the windshield, which can be a little distracting compared to the VIOFO.

When it comes to wires, the VIOFO A139 Pro now has ultra-slim coaxial cables and mini connectors for a user-friendly installation.

Now, let’s talk about how these dash cams capture footage. We know that both are equipped with Sony STARVIS 2 IMX678, have HDR, have 2MP Sony STARVIS sensors for their secondary dash cams, and record using a three-channel configuration. The A139 Pro, however, also has Wide Dynamic Range features. Check out how HDR and WDR work in dash cams here. Additionally, the A139 Pro also boasts Super Night Vision 2.0, making night recordings look more vibrant and balanced.

The field of view of the Vantrue N4 Pro measures 155° for the front, a bit wider than the A139 Pro’s 140°. However, when it comes to the interior and rear cameras, the A139 Pro captures at 170°, wider than the N4 Pro’s 165° and 160° respectively so you get more lanes from behind, and wider coverage for your passengers inside the car. We highly recommend this for Uber, Lyft, and other ride-sharing services. Additionally, the A139 Pro has 6 IR LEDs compared to the N4 Pro’s 4 LEDs, so with the VIOFO, you get sharper details even in complete darkness.

It’s also worth noting that the A139 Pro supports higher frame rates in various modes, such as 60fps in 2K mode, enabling smoother video playback – which is non-existent in the N4 Pro.

For maximum sharpness and clarity, the free CPL filter that comes with the A139 Pro also reduces glare and reflections. The N4 Pro is also compatible with a CPL filter, although you must buy it separately. If you wish to add more protection, you can also get the BlackboxMyCar Aqua Shield which works to prevent your dash cam from being ruined by raindrops, dust, and other environmental elements.

The A139 Pro offers 3 different parking recording modes – Auto-Event Detection with 15-second buffered recording, Low Bitrate Recording, and Time-Lapse Recording.

The Vantrue N4 Pro also has these parking mode features, although its buffered recording is only 10 seconds, which limits your chances of seeing more of what happened in the event of an accident – a lot can happen in 5 seconds, mind you.

Regardless of the parking mode you are using, you will need the Type-C HK3-C or HK4 hardwiring cable - yes, it works with either of the two cables. The N4 Pro also works with a Type-C hardwiring cable. You’ll need to purchase the cable separately for both cameras.

In terms of features, both the cameras are equipped with built-in GPS, built-in 2.4GHz and 5GHz dual-band Wi-Fi, and come with a dedicated smartphone app.

While the Vantrue N4 Pro has Voice Commands that allow you to take photos and lock videos. Although the A139 Pro doesn’t have this, it still has Voice Notification features that keep you in the know of your dash cam’s status, so you can get focused on the road – no annoying beeping sounds anymore. If you find the idea of Voice Commands really cool, you can get this from another VIOFO dash cam with Starvis 2, the all-new A119 Mini 2.

Moreover, both dash cams can support micro SD cards up to 512GB.

The VIOFO A139 Pro is available at $369.99 USD for the three-channel model, while the Vantrue N4 Pro is more expensive at $379.99 USD. While neither camera comes with a hardwiring kit or SD card, the VIOFO A139 also comes with an included CPL filter.

The pricing here is inches away, truly a tough competition between these two units, with the A139 Pro sliding slightly ahead.

The VIOFO A139 Pro and the Vantrue N4 Pro sure have a lot of things in common – 512GB storage capacity, three-channel configuration, Sony STARVIS 2, dual-band Wi-Fi, built-in GPS, and included static stickers. However, when it comes to video quality and overall performance, we think that the VIOFO A139 Pro still outshines Vantrue, though a close competition.

More importantly, VIOFO’s reputation in the dash cam community is unparalleled, being a dash cam brand known for its long-term reliability and high value for money. This makes the A139 Pro, the real pro for us.