Lol the cable would’ve been as expensive as the Sundaras. 
And yeah, welcome to the club ( Apparently, I’m a static electricity generator ). Touch something to “ground” yourself before touching your headphones, or after removing your headphones, or, especially, when you have planars on your head and you stand up.
TL,DR for the link: I had T50RPs on my head, stood up, heard “interferences” in em, touched the RCA cables of my JDS Atom amp to unplug it… and burned the left channel.
Image saved, might need it later. 