I use a standard 3.5mm stereo "Y" cable... 3.5mm 3 pole stereo plug (headphone plug) on one end and two full size phono-RCA connectors on the other. The tablet doesn't have a lot of power to offer (it's designed to drive headphones), so the volume level coming out is probably lower than other devices (the tablet volume even at max is about 1/2 -2/3 of the volume coming out of my laptop jack) but that's to be expected given the size and power features of the tablet in comparison. So yes, the volume will be a bit lower, but no, it's not damaging in any way.