Apparently all that needs to be changed is a fuse and then you can run most new amps on 240V. I think GB amps in particular have a universal power input that auto-detects the voltage coming from the mains. It'd just be a question of getting the right cord etc. Also the fact that warranty will be voided, but I think if the saving was that great it'd be well worth it.Shipping wouldn't be ridiculous, especially if you bought a micro head.
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All I'm saying is research your product before you lay the dough down. Not trying to talk you out of anything. Dunno if the above example is a technical or marketing constraint.
My experience of buying overseas gear has been mostly good, but it's been limited to a couple of basses and some mics.

