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Hollyland technology unveil the Mars 400S Pro

Posted on Oct 19, 2020 by Pro Moviemaker

The newest addition is a 400ft wireless video and audio transmission system with a new and transverse design

The new 400S Pro has 400ft line of sight (LOS) wireless video and audio transmission with 0.08S lowest achievable latency, slightly lower than the 400S. Similar to other products in the Mars Series, it has eight channels, and there are channel scan and scene modes to avoid interference and to ensure a stable wireless transmission.

Hollyland has added a silent mode for the equally loved and hated cooling fan. Some love having the fan to cool the system down, whilst others hate it for the noise it produces. It is not a loud noise that bothers most people, but it does cause issues for people who are used to setting up a microphone next to their camera. Now there is the option to turn the fan off completely by switching it to a low speed, or by selecting auto to let the system decide whether it needs to be cooled down. When it is off, they may get a little bit hot, but as long as the temperature doesn’t bother you, it won’t affect the performance of the system according to Hollyland’s test results.

Another new feature is the direct live stream data feature. Now, with the Pro, video feed straight out of RX will be used for live streaming on OBS, vMix, or VLC on your personal computer without further encryption and decryption via a video capture device.

The 400S Pro also comes with an HD mode, under scene mode in the settings. The bitrate of the streaming would be raised from 8M bps on Mars 400S to 12M bps to provide a higher definition of monitoring video quality. This allows for richer details from the feed on the monitor or mobile devices.

The software on the Pro has been optimised to accurately understand the current wireless environment and enables you to easily find out the optimal channels for use on both RX and on the HollyView App. The app can also directly upgrade the system and abandon traditional upgrade on the devices.

The new 400S Pro is an affordable, robust, and compact wireless transmitter that is recommended to filmmakers who are looking for an entry-level wireless video and audio transmission solution.


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