If you are looking for a digital audio switch, the Aukey 3×1 Digital Optical Audio Switch is currently on sale for $4 in new condition by Aukey with the orders fulfilled by Amazon. It has three inputs and one output. It also comes with an IR receiver and remote control. It comes with a 24 month warranty. It is powered via USB Mini Type B (the predecessor to microUSB). A USB-B to full size USB-A cable is included, so all you need is a standard USB power source. It has no customer reviews. You can buy as many as you like.
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