Anyone use 100v or 220v gear with a transformer?


Is there a downside to using a 100v or 220v amplifier with a step-down or step-up transformer to convert to 120v?
tvad
300w is going to be too small. It will 'work', but you'll probably find the amp sounding constrained. Any transformer with a 1KVA rating should do.

Regards
Paul

05-13-07: Pauly
300w is going to be too small. It will 'work', but you'll probably find the amp sounding constrained. Any transformer with a 1KVA rating should do.
According to the electrical conversion formulas on this page, 1 kVa would equal 1000 watts.

If the maximum draw of the amplifier is 195 watts, how will providing 1000 watts be more beneficial than providing 500 watts (or more than double the maximum draw of the appliance)?

Also, the amplifier uses a 5a fuse, so 100v X 5a = 500 watts. The amp's fuse blows at 500 watts, so supplying more than 500 watts seems superfluous, yes?
I would think that the smaller x-former would heat up significantly. Depending on the windings, hot coil wire could change the resistive load, thus leading to slight voltage fluctuations. Yes? No? Opinions?

You will probably have to change you main fuses, especially if going from 220v to 110v.