The 4K monitor I bought for my office doesn't have internal speakers so I had to route the audio from it and my laptop to my Altec Lansing VS2124 speaker/subwoofer system. I don't have any active signals from both going to the speakers at the same time. The sound quality is excellent, especially when feeding the subwoofer with bass! One plug connects directly to the back of the monitor. The other connector connects to a Monoprice 105586 22AWG 3-Foot Stereo Male to Stereo Female Extension Cable and the other to the headphone jack on the laptop. The Altec Lansing VS2124 has a headphone jack which I will use to listen through headphones from a monitor or laptop.
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