Viofo’s A139 3CH three-channel, three-camera dash cam system is a first in our experience. We’ve tested three-channel products before, but the interior camera has always been integrated into the same body as the front camera. Viofo’s is separate, as is the rear camera.

The upside to this discrete interior camera approach is versatility in locating each camera. The downside, though easily surmountable, is that you have more cables to hide.

Design and features

The A139's three cameras are also notable for their high resolution. The 140-degree FOV front camera is 1440p, while the 170-degree cabin (interior) and rear cameras are both 1080p. All manage 30 fps while recording simultaneously, which means there’s a fair amount of processing power under the hood. High-quality Sony STARVIS IMX335 sensors are used by all three cameras. 

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