Have a new Era 300 and Line-In function is NOT working at all. I have several 3.5mm to USB-C adapters and have tried them all with no success. A factory reset of the Era 300 also made no difference. The app shows Disconnected even when the cable is connected. Do I really need to spend the $19 of the “official” Sonos brand line-in adapter for this to work or should any other brand theoretically do the trick. Or is there another problem here?
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