Adamed

Howdy all, I was recently gifted an SR-30 and SR-30 Pro by a relative who had kept them in a box since 2008. I'm not an audiophile by any means, or knowledgeable about audio technology beyond "3.5mm jack goes in 3.5mm hole", but I'm making an effort to get these working again and maybe learn something new in the process. Is there anything I should know about these cans before I try them out? I'd like to treat them properly since they're over twice my age. I should mention, I've got two SRD-4 Adapters for them and was also given a Pioneer SX-434 which I've plugged into my desktop through a 3.5mm to RCA splitter. I'm a bit frightened of the SRD-4s, as they terminate in open wires with bare metal.