Two input audio devices - single 3.5mm audio output pc

[Lone_Ranger]

I would like to know how much is safe, using for example:
Set of 2 STEREO PC SPEAKERS (2x5w) , which are connected by one 3.5mm jack and takes power via USB port, and MINI STEREO HI-FI (2x20w) , which is connected via AUX and 3.5mm jack.
Since there is only one 3.5mm (stereo) audio output in pc, I've connected both, pc stereo speakers, and mini HI-FI stereo, both 3.5mm jacks connected with this,

and then to pc audio output.

All 4 speakers receives sound from pc, it is fine, I've done it before, but I'm just curious, what do you think, how much safe is this.
Please tell me what you think... Thank you!

 

[basroil]

1) That is OUTPUT, not input (title issue)
2) As long as your speakers are getting power from somewhere external to your speaker output cable it should be fine. You might lose sound quality, but no chance of damage from that alone.

 

[Kristopher_4]

I would like to know how much is safe, using for example:
Set of 2 STEREO PC SPEAKERS (2x5w) , which are connected by one 3.5mm jack and takes power via USB port, and MINI STEREO HI-FI (2x20w) , which is connected via AUX and 3.5mm jack.
Since there is only one 3.5mm (stereo) audio output in pc, I've connected both, pc stereo speakers, and mini HI-FI stereo, both 3.5mm jacks connected with this,

and then to pc audio output.

All 4 speakers receives sound from pc, it is fine, I've done it before, but I'm just curious, what do you think, how much safe is this.
Please tell me what you think... Thank you!

 

[Kristopher_4]

So, is it true, this device (plugged in) will play two separate stereos?

 

[basroil]

So, is it true, this device (plugged in) will play two separate stereos?

NO, it will play the SAME stereo audio to two outputs. You cannot use it for separate audio, it will only "copy" it