Combiner for 5.1 analog inputs

[fronn]

I'd think a switcher is preferred, but getting some higher quality splitters might be worth a try (even the higher quality ones should be much).

Just be aware of possible issues in doing something like that, nothing dangerous, but there's possible weird problems that could occur if both devices are powered on at the same time (if the unit is on, there's probably something, however small, coming out of the jacks). I can't imagine two signals on the same wire would be willing to play all that nicely with each other.