VIOFO A329S 2CH Review: Top-Tier Footage, at a Premium

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Overview

The VIOFO A329S 2CH is a front-and-rear dash cam built around one headline spec: its front camera records true 4K at 60 frames per second on Sony’s STARVIS 2 IMX678 sensor, while a 2K rear camera watches the back window. It is for drivers who want footage they can actually read, plate numbers included, and who are happy to hardwire a camera for parked coverage. Vortex Radar names the A329S its best all-around dash cam of 2026, and its reviewer runs one as their own daily camera.

VIOFO released the A329S in June 2025 to replace the A329, which Tom’s Guide reports is now discontinued, adding a low-power parking mode, a multiplex option that merges the channels into one video and a choice of add-on cameras; Wi-Fi 6 and recording to an external SSD of up to 4TB are still uncommon extras on a dash cam. On Amazon.ca, where VIOFO sells it directly, the 2CH kit was $569.99 CAD in October 2026, between Garmin’s X310 at $509.49 CAD and the BlackVue Elite 9 at $729.99 CAD.

Key Specifications

VIOFO A329S Video Quality

Video is the reason to buy it. Most published tests used the three-camera kit, which adds a cabin camera to the same front and rear cameras, and Vortex Radar found the front camera keeps its full quality with all three running. Testers agree the front camera’s daytime footage is outstanding, with crisp edges, fine detail and license plates you don’t have to squint at. DashCamTalk measured an average bitrate of 65 Mbps from the front camera at 4K 60fps and credits that high bitrate for the daytime detail. Night footage is a step down, with some grain, but it stays clear; in What Car?’s group test, the A329S picked out vehicles at night, with both the front and rear cameras, that some of the other cameras missed.

60fps or HDR: The front camera can’t record 60fps and HDR at the same time; switching HDR on drops it to 4K at 30fps. The extra frames help catch the plate of a car moving past at speed, while HDR evens out bright lights and dark shadows, which matters most after dark. Tom’s Guide suggests using the timer settings to run 60fps by day and HDR at night.

Rear camera: The 2K rear camera can’t match the front, but DashCamTalk rates it one of the better rear cameras on a multi-channel dash cam: very good by day and average at night, recording at about 27 Mbps. Tom’s Guide still saw some reflections from the rear window because the rear lens has no filter; VIOFO sells a CPL-600 rear filter separately.

Polarizer: A circular polarizing filter for the front lens comes in the box, and it does a good job of cutting glare and windshield reflections.

Parking Mode and Battery Protection

Recording while parked needs a hardwire kit, and the best of it needs VIOFO’s HK6 kit, sold separately. VIOFO says the HK6 is required for the hybrid parking mode, the cut-off voltage that protects your car battery, and Bluetooth battery monitoring. In hybrid mode the camera starts in one of its regular parking modes (time-lapse, low bitrate or motion-triggered event recording), then, after a timer you set or at the cut-off voltage, drops to a low-power state that wakes only for an impact, recording within about 2 seconds.

Tom’s Guide found the hybrid mode kept watch without draining its car’s battery. For a car left parked for weeks, though, specialist rivals hold out longer. On a dedicated battery pack, the A329S manages about a week of low-power recording by Vortex Radar’s measure, against over a year for the Vueroid S1 4K Infinite, which also wakes sooner after a hit. BlackVue rates the Elite 9 at under 1 mA in its power-saving mode, waking in under a second, but Vortex Radar notes the Elite 9’s cloud alerts are off in that mode.

Thinkware’s U3000 Pro takes a different approach. Radar sensors in its front and rear cameras detect movement near the parked car, so it can save the moments before an impact even in its low-power mode, though testers rate its video a step behind VIOFO’s. Two points count against it in Canada: in October 2026 Amazon.ca listed only its front-camera kit, and Thinkware rates it to operate down to -10°C, where VIOFO rates the A329S to -20°C.

Setup, App and Storage

The thin rear cable, 2.8 mm by AutoGuide’s measure, tucks into the car’s trim more easily than most, and some testers found the whole install easy. Others still found wiring and routing the extra cameras the fiddly part of the job. The front camera slides off a mount that carries the GPS, so you can take it with you when you park, and clear static-cling sheets keep adhesive off the glass.

Pairing your phone takes a manual step: What Car? had to switch on the camera’s Wi-Fi by hand and pick it in the phone’s settings, though it calls that just a couple of button pushes, and CGMagazine had to change settings because its phone kept joining the car’s own Wi-Fi first. Tom’s Guide found the Wi-Fi setup quick. Once connected, transfers over Wi-Fi 6 are quick, with clips reaching a phone in seconds. The menus give deep control over resolution, bitrate, loop length, G-sensor sensitivity and parking behavior, and Surrey Live’s reviewer warns that people new to dash cams may find them a little overwhelming.

Storage: It records to a microSD card of up to 512GB, which you buy separately, or to an external SSD of up to 4TB over USB-C, but, DashCamTalk notes, not to both at once. VIOFO says an SSD can hold over three weeks of footage, lists the SSD models it has tested, and says an SSD needs the hardwire kit for power.

Other features: GPS stamps your speed and position on the video, and voice commands lock a clip or take a photo hands-free. The multiplex mode merges front and rear video into one file that’s easier to send to police or an insurer, though Tom’s Guide notes the rear view drops to 1080p in it. VIOFO’s warranty runs 18 months, and DashCamTalk reports six more months when you register the camera online.

How Does It Stack Up Against the Competition?

Three rivals a buyer at this level weighs: Garmin’s compact X310, which films the road ahead only; BlackVue’s cloud-connected Elite 9; and Vantrue’s N4 Pro S, which adds a cabin camera to its front and rear cameras.

VIOFO A329S: Worth It for Sharp 4K Video and a Capable Rear Camera

Buy the A329S 2CH if the quality of the footage is what you’re paying for. It is the only camera in this table that records 4K at 60fps, its footage stays clear at night, and VIOFO rates it to keep running down to -20°C, with a supercapacitor instead of a battery; check that against your own winters if the car sleeps outside. Budget for the HK6 kit if you want its low-power parking mode. One gap for francophone drivers: DashCamTalk lists its voice commands in English, Chinese, Russian and Japanese, with no French.

For many drivers the A229 Pro is enough: it uses the same Sony sensors, it was $399.99 CAD on Amazon.ca in October 2026 against $569.99 CAD for the A329S, and Unlike.net names it the right choice for most drivers; you give up 60fps, Wi-Fi 6 and SSD recording. BlackVue’s Elite 9 can alert your phone when the parked car is hit, through a Wi-Fi hotspot left in the car or its optional LTE module, though not in its under-1 mA power-saving mode. If you carry passengers and want the cabin on video, VIOFO’s own A329S 3CH adds a cabin camera to this kit, and Vantrue’s N4 Pro S also puts three cameras in one kit. And if you only need the road ahead on camera, Garmin’s X310 is far smaller and has its polarizer built in.

GuideBest Dash Cams of 2026: Front-Only or Front and RearRead the Guide →

VIOFO A329S 2CH

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Marcus WebbSenior Editor 𝕏

Marcus has been hunting for the best tech and gear for over 40 years — as a coder, gamer, and lifelong outdoors enthusiast, he knows the gap between a good spec sheet and something that actually holds up.

How this was made: Built from the 22 sources listed above, including 4 independent reviewers such as Tom's Guide, DashCamTalk and TechRadar. Written with AI, then fact-checked against those sources by a separate AI. We haven’t tested this product ourselves. How we review →