I need to feed two different Dell Ultrasharp monitors with a common HDMI signal source. An older 3008WFP, that has a built-in 5.1 surround sound decoder, and a new U2713H, that only has a stereo 2.0 decoder. I also feed the full HDMI signal to my Oppo BDP-105 to decode the surround sound to high quality 7.1 analog outputs. All the powered HDMI splitters or matrix switches I have tried stop sending 5.1 surround sound and only pass stereo 2.0 to ALL ports.
This was not a problem when I only connected my Dell 3008WFP to my Monoprice HD-140E3-3D-V2 1-4 active splitter. But when I add the U2713H, stereo only monitor, the splitter switches from 5.1 to 2.0 and drops the center, subwoofer and rear channels! According to what I have been able to find out from Monoprice is that the splitter does this for all connected devices if any one of them can NOT decode surround sound! The same problem occurs with the Monoprice 4X4 Switcher/Splitter.
Is there another HDMI splitter available that has either a way to force it to pass surround sound to one or more output ports or does NOT inhibit surround sound?