I live in Poland, and the only amp that I own is an early '70's Acoustic 370 that I use an external transformer for, specifically a toroid transformer rated for 1000W. Handmade by a polish company that I found online, made for use with lots of stuff from the US like power tools, etc.
It's large, but it also depends on how you define large (mine fits in one hand), heavy (bulky), but not noisy at all. The stuff I have to move at a gig is the head (which weighs a ton), a 2x15 cab with no wheels (don't ask), my Precision Bass in a hard case and the transformer. I just put the little guy in my cargo pants pocket and go. When I hook it up all it makes is a very silent, low frequency buzzing sound, and you really have to put your ear against it to hear it properly. It also doesn't interfere with the sound in any way. I use it at rehearsals, gigs and during studio work.
I haven't had issues with the amp not getting enough power. In fact, it's got too much power, but that's an Acoustic for ya! I suggest you look into getting a transformer.
Last edited by Panek : 10-10-2013 at 03:26 AM.