Toroidal transformer help

1. Would these Torods be suitable for powering the Chinese Naim 140 clone kits found on Ebay?
2. If so which would be preferred the 500va or 330va?
3. I am assuming these are a dual secondary voltage source 25 Volt X 2 to power the supply's for both channels from the single Toroidal?

If my assumptions are incorrect please put me on the correct path and recommend a toroidal transformer setup suitable for the Naim 140 2 channel amp.
Thank you.

Avel Y236801 500VA 25V+25V Toroidal Transformer - Parts Express

Avel Y236750 330VA 25V+25V Toroidal Transformer