amazing looks like those are shunyata power cable. sigma series? which one are you using? digital or hc? i'm thinking getting one for the wa5. probably a alpha. would a digital be enough? or hc, more power/high current the better?
i only use 6v6gt and rca 6sn7 and rca gz34 so my s6 is very tubey. even more tubey than my wa5, using mullard gz34, sylvania vt231 and either kr300b or psvane 300b
and, you guys sounded like tubey is bad