Hi there Nicksgem,
Powercords?
I am using Audusa Eupen Ferrite impregnated cables.
Excellent value and available made up or DIY from www.audusa.com.
Can't comment on other power cables as I haven't tried them. But the technology of the German Eupen cable is very significant and works.
I have tried TMC White, Yellow, Xindak FA-Gold and FA-1, and a home made silver interconnect and the supplied IC from DK Design is as good as any. Different. Seems slightly smoother and what at first appears less detailed, but really it's not etchy and over the top. The details is there but not so obvious.
I enjoy my amp too as you do. It will be interesting to hear from others regarding IC's, Valves and Power Cables.