Often the simplest ideas are the most effective, providing a quick solution to the long winded and ineffectual workaround you’ve been using for months! This Audio Output Switch is a miniature module which allows you to switch between one of two stereo inputs, to save you unplugging one device and plugging in another each time. It’s perfect for computers, phones and headphones, ideal for zoom calls and all sorts of everyday use.
The Audio Output Switch is available as a kit (which we’d recommend to any beginner) and as a completed unit – comprised of a small PCB, three stereo sockets and a toggle switch. It’ll save you time in switching signals and will significantly reduce the wear and tear of your sockets which have a finite lifetime. It can be used to switch between two signals – as well as acting as an on/off switch for one single input.
It’s an incredibly affordable unit, which is small enough to be taken with you anywhere to switch your sounds. It features stereo 3.5mm sockets so it’s ideal for all manner of portable audio devices, and will also work for mono signals. The Audio Output Switch is one of many products by Jim Heaney who’s based in the USA.
source https://blog.tindie.com/2021/02/small-circuit-for-switching-headphone-jack-signals/
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