[Big Bad Bob]

On 02/02/11 19:10, Patrick Turner so witilly quipped:
ARC should never ever let any amp out the factory gate unless it is
equipped with an easily adjustable mains voltage selector switch, with
selections of 100V, 110V, 120V, 220V , 230V 240V and 250V. This isn't
difficult in such highly priced amplifiers.

although my transformer experience only extends to things like unwinding
a few burnt ones to see if I could fix them (no) and selecting low
voltage transformers for solid state power supplies "intentionally
overrated" to prevent burnup, I would expect that a properly designed
power supply transformer capable of 110/220 would theoretically NOT be
that much more expensive to make if it contained a few MORE taps, like
120/240 at the very least (if not all of the ones you mentioned). And
yeah, the extra dollar or two for a high end amp should be expected.

But I'm still having a bit of trouble seeing why a transformer power
supply would be superior to a switcher, especially when a switcher would
produce the same output voltages REGARDLESS of the input voltage, and
would most likely cost less, weigh less, etc. (unless large chunks of
iron for the power supply have a nostalgia factor that I"m somehow
missing). Anyway I probably wouldn't be able to convince the amp
makers, but it's an interesting point anyway (I think so).