Step Up/Down Transformers - Good or Bad?


I have an amplifier that was purchased in Europe and I am using it here in the States. I am having to use a step up transformer in order to connect between the wall and the amplifier. Is there a compromise to the sound with any transformer that is placed between component and wall outlet? Does it all depend on the quality of the transformer? Can one use an after-market power cord and have it yield benefits, even if it is plugged into the transformer?

Appreciate the responses.
glrtrgi
Glrtrgi, If you are going to live in the States for an extended period of time it might be worth having an electrician install a 240 volt line for your Euro amps.

USA homes already have 240 volt but typically limited to power electric cook range, clothes dryers and heater-furnace.

I've successfully used a pair of 240 volt runs in my stereo system for more than a decade with no issues.
No major issues with amps. You must get a large enough transformer however or you will suffer. For a Power Amp expect a transformer to be roughly the size of a 5 Lb bag of sugar.
I think Albert has the best solution. You should however remember that the power company uses various step down transformers before it gets to your house. Thus there should be no real problem.
It is an improvement rather than a problem from an incoming power quality perspective, as long as it is not undersized. Some of the audio power conditioners sold for significant $'s are not much more than a 1-1 transformer in a fancy enclosure (fwiw, installing a regulating transformer in front of sensitive electronic equipment is common practice in industry). Sola, and others, make a good regulating transformer at a reasonable price if you wish to get fancy. The 240v line solution works, but kids tend to stick things in outlets at some point in their life & the penalty for doing this can be much higher. Good luck!
The 240v line solution works, but kids tend to stick things in outlets at some point in their life & the penalty for doing this can be much higher. Good luck!

Remember that 240V in USA is twin 120 volt runs. This is simply two of the same lines that already exist in other parts of your home. So, unless your kids are especially gifted at getting things into sockets they are likely to get 120 (one leg).

Besides that, the transformer being suggested by others has the same liability as it produces 240 volt as well.

The plus of the transformer is it can move with you to another home. The plus for dedicated 240V line is better sound (in my opinion) and probably cost less. Remember too, future buyers of your home can split that 240 back into twin dedicated 120 volt lines to run whatever they please.

It's not a bad thing to have.