Let us differentiate these two products first. The BlackVue DR770X Box is a triple-channel dash cam that comes as a full package. On the other hand, the MB-100 is an optional product for select Thinkware dash cam models like the F200 Pro.
Thanks to the modular design of the MB-100 Multiplexer, you can add a combination of side, interior, exterior, and rear views to the main forward-facing dash cam. It converts the dash camera's rear Full HD 1080p video @30fps resolution channel into one – enabling you to capture two to four video feeds in a single rear video file. However, take note that the Multiplexer is not a camera and cannot be used to record driving footage by itself. The package includes the MB-100 Multiplexer module, a video out cable, and a custom wiring harness. The wiring harness contains 4 video input connectors labeled Cam1 through Cam4 for up to four cameras, a video out connector, two power wires for constant battery power, and a ground connection. The Multiplexer will require an additional camera to perform, specifically the Thinkware F200 Pro 2-CH is the only model that we currently offer that can behave as such for the Multiplexer.
On the other hand, the DR770X Box 3-Channel dash cam is a full package from BlackVue. For the first time, BlackVue designed the DR770X Box to be a separate unit from the cameras, carrying the BlackVue dash cam's processor, WiFi source, and memory card.
Here, we found that the DR770X Box has three cameras - one each for the front, rear, and interior. The DR770X cameras are linked via coaxial video cable to the Box, which serves as the recording unit that can be safely stored in the glovebox or under the seat. Unlike other cameras, the DR770X Box cannot be easily slid off the mount since the mount is firmly secured and locked to the unit with a specific Allen key that comes with the unit. Beyond that, the power cable and SD card slot are both protected by their own tamper-proof locking cover. Even besides the Box, each camera unit presents its own difficulty to break into, as all three of them come with their own tamper proof casing. This casing prevents the cabling from being unplugged, and the cameras taken off the mount.
In our opinion, this is BlackVue’s most secure dash cam entry. We found out that aside from these additional, physical protections, the BlackVue DR770X Box has innovated security with an alarm. Once the head unit itself has been disconnected from the Box unit, the Box itself will enter into an emergency mode, blaring loud and proud like a true car alarm. There’s also a coin battery-powered, remote Bluetooth button that can be used to trigger Event recordings manually, as a way to easily bookmark important files.