Hook Up Wire for Pre and Power Amps


I am quite new to DIY rewiring and hope some of you have experience and can advise on a high quality wire and the gauge to buy.  The only product I have read about is VH Audio OCC copper and silver wire. Thanks in advance for your thoughts.
bazza
Thanks for your recommendations!  I have learned that solid core wire might have an advantage over stranded.  The 845 tubes I have in my amps draw as much as 1000VDC so will require a lower gauge for sure.  Correct?
The 845 tubes I have in my amps draw as much as 1000VDC so will require a lower gauge for sure. Correct?


Nope.  Gauge is on amps.  Insulation is on voltage.

So make sure the gauge is the right size for the current (A), but the insulation on that wiring has to withstand the V differential present, regardless of the current.

Best,

E
To clarify: 

The insulation needs to be greater than the voltage DIFFERENCE, not just the voltage.

For example, if the insulation comes near -200V and carries +1000V, then the insulation must be rated at least 1,200 V.