2 into 1 stereo 3.5mm jacks?

[itm]

I want to connect 2 stereo sources to the same speaker system. One source is a PC. The other is a Behringer UMC404HD audio interface. Typically only one of these would be playing back at the same time, but there may be times when both are.
If I wanted to do this, would something as simple as this enable it?
https://cpc.farnell.com/pro-signal/...daptor-2x-mono-to/dp/CN21097?st=jack adapters

 

[drichardb]

Definately wouldnt recommend that, could damage the input on the speakers.

Are you using all the inputs on the interface? If not connect the PC to a spare input and just connect the interface to the speakers.

If thats not an option then search on the big river retailer for "Andifany CX400" and select the Musical Instruments & DJ department. Should be the first result. It's a 4 channel stero mixer for £17. Has phono inputs and outputs so you may need some additional cables but its passive so doesnt require power and will allow you to properly balance the two inputs.