Moving to London in a couple of weeks, thinking of bringing my Brown Note 18 Marshall clone head with me. Of course it's 240v over there so I'd need to buy a transformer/power converter. You're supposed to get 3 - 5 times the power consumption rating as a guideline, to allow head room for spikes. Thing is, I have no idea what the power consumption is on the head, seeing as it's a hand made deal, and I'm a plug n play kinda guy. I'm hoping a 1000 watt converter will do the trick, but wondering if I should go 1500 to be safe... it's more money and heavier, so I'd rather save on both counts if possible. Any ideas on what the watts consumed by an 18 watt tube head would be? Ballpark? Thanks for any input!