VIOFO A329S 3CH vs Vantrue N4 Pro S
The two best three-channel dash cams for a semi — buy the VIOFO A329S 3CH for the sharpest cabin and rear footage plus the biggest storage, or the Vantrue N4 Pro S for IP67-rugged, truck-built hardware with infrared cab night vision.
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TopsFive comparison scores
Side by side
| VIOFO A329S 3CH | Vantrue N4 Pro S | |
|---|---|---|
| Price | $469.99 | $379.99 |
| Channels | 3 (front + cabin + rear) | 3 (front + interior + rear) |
| Front Resolution | 4K (2160p) | 4K (2160p) |
| Interior Camera | Yes — 2K, 210-degree view | Yes — 1080p, infrared |
| Rear Resolution | 2K (1440p) | 2.5K (1440p) |
| Image Sensor | Sony STARVIS 2 (all channels) | Triple Sony STARVIS 2 |
| Connectivity | Wi-Fi 6 (5GHz) + GPS | Wi-Fi (5GHz) + GPS |
| Max Storage | 512GB microSD or SSD up to 4TB | microSD up to 1TB |
| Parking Mode | Buffered / low-power | 24/7 (buffered) |
How they differ in real use
Both are three-channel systems that record the road ahead, the cab, and the road behind, and both put a Sony STARVIS 2 sensor on every lens — but they optimize for different things. The A329S 3CH is the imaging and storage flagship: its front camera shoots 4K, and crucially its cabin and rear channels are both 2K rather than 1080p, so interior detail and the view behind stay sharp. It also adds Wi-Fi 6 for fast 4K transfers and, uniquely here, support for an external SSD up to 4TB, which lets an over-the-road driver record weeks of continuous three-channel footage before the oldest clips are overwritten. The N4 Pro S answers with hardware built for the job: its cameras carry an IP67 dust-and-water rating, and its interior lens uses infrared LEDs so the cab is genuinely visible in the dark — something a straight 2K cabin sensor without IR handles less well. Its front is also 4K and its rear is a high 2.5K, but its interior channel is 1080p and it tops out at 1TB of microSD with no SSD path. Price separates them too: the A329S runs about $470 against the N4 Pro S's roughly $380. In practice you are choosing between the sharpest, highest-capacity cabin-and-rear footage and the most rugged, night-ready, truck-specific build.
VIOFO A329S 3CH
- All three channels use Sony STARVIS 2 sensors: 4K front, 2K cabin, and 2K rear
- 210-degree interior view captures the full cab for owner-operators and fleets
- Wi-Fi 6 (5GHz) transfers 4K clips to the app quickly
- Supports an external SSD up to 4TB for weeks of continuous three-channel recording
- The most expensive option on this list
- SSD and a hardwire kit for full parking mode are added costs
- Three-camera install takes time in a large cab
Vantrue N4 Pro S
- Marketed and built for trucks, with an IP67 dust and water rating on the camera hardware
- Triple Sony STARVIS 2 sensors: 4K front, 2.5K rear, 1080p interior
- Infrared interior lens keeps the cab visible at night
- Supports microSD up to 1TB and 24/7 parking mode
- Interior channel is 1080p, lower than the A329S's 2K cabin
- microSD storage only — no external SSD option
- Three-camera routing in a semi cab is involved
Which should you buy?
Choose the VIOFO A329S 3CH if image quality and storage headroom are your priorities — an owner-operator who wants the crispest cabin and rear evidence and needs weeks of continuous SSD recording on long hauls will get the most from it, and can absorb the higher price. Choose the Vantrue N4 Pro S if you want hardware built for a working truck: the IP67 sealing shrugs off heat, dust, and moisture, the infrared interior lens keeps the cab visible at night, and 1TB of local storage is plenty for most routes — all for about $90 less. Put simply, the A329S is the better camera on paper; the N4 Pro S is the more purpose-built truck cam.
Choose the VIOFO A329S 3CH if
- Owner-operators wanting the sharpest all-round footage
- Long-haul drivers who need weeks of continuous SSD recording
- Fleets needing clear cabin and rear evidence
Skip it if
- Tight budgets
- Drivers who only want a simple front camera
Choose the Vantrue N4 Pro S if
- Truckers who want rugged, weather-sealed hardware
- Drivers needing infrared cabin night vision
- Owner-operators wanting up to 1TB of local storage
Skip it if
- Buyers wanting 2K interior footage
- Those who prefer external SSD storage
Common questions
Which one is better for recording the cab at night?
The Vantrue N4 Pro S, because its interior lens has infrared LEDs designed to illuminate the cab in darkness. The VIOFO A329S has a higher-resolution 2K cabin camera, which captures more detail in lit conditions, but for a genuinely dark cab the N4 Pro S's infrared interior is the more reliable choice.
Do either of these support enough storage for long-haul routes?
Both do, but the VIOFO A329S goes further. It supports an external SSD up to 4TB — enough for weeks of continuous three-channel footage — in addition to a microSD card. The Vantrue N4 Pro S is microSD-only but supports cards up to 1TB, which is still ample for most drivers between offloads.
Is the more expensive A329S worth the extra money over the N4 Pro S?
It depends on what you value. The A329S justifies its roughly $90 premium with 2K cabin and rear channels (versus 1080p interior on the N4 Pro S), Wi-Fi 6, and SSD support up to 4TB. If you don't need that image sharpness or storage and would rather have IP67 ruggedization and infrared cab night vision, the N4 Pro S is the better value.