It should be fine if you match the voltage exactly, and the power supply has a current rating equal to or larger than that required by the streamer.
You always want a switch mode or regulated power supply - They ensure that no matter what the input voltage (with in reason), the output is always the same voltage and will not fluctuate.
The only other thing to check is if it's DC (I would expect it is), and the polarity of the DC plug. This is shown with one of these logos usually: