Question about Edifier R1280db

And do you happen to have a link for an analogue cable (3.5mm jack to stereo RCA)?

Yes, the speakers have the following inputs: 1x optical digital, 1x coaxial digital, 2x Chinch and Bluetooth. I connected the speakers to the TV via an optical cable. However, they could also be connected from the headphone output via an analogue cable (3.5mm jack to stereo chinch).