2. amps-preamps
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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
albertporter's avatar
albertporter
4,949 posts
 
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.
gregadd
574 posts
 
As my electrician friend told me its amps not volts that kill.
jeff_jones
418 posts
 
Gregadd - I think your buddy would tell you that twice the volts gets you twice the amps, when other factors are equal.
He is right though when conditions are right it doesn't take high voltage to drive enough current to hurt or kill.

Glrtrgi - I really don't have issue with 240v lines, and as noted above you are going to have a 240v outlet somewhere unless you wire directly from tranny, just think it is good to be aware of the potential hazards.

Albertporter - "unless your kids are especially gifted at getting things into sockets they are likely to get 120 (one leg)." The lucky kid goes 120-ground, the unlucky goes +120 -120, just touching 120 is usually free unless you are in contact with a grounded surface. Not sure why one would be more likely than another.
The better sound opinion is interesting (why , in what way, how determined?) if you are in the mood to elaborate.

Happy listening
detlof
1,899 posts
 
Jeff,
I can't speak for Albert of course, but I've experimented with all sorts of transformers in the course of my meandering audiophile career. To my mind and experience most of them interfere with dynamics in the musical signal, so also for me a direct dedicated line has been the preferred choice.
Happy listening,
Detlof
gregadd
574 posts
 
"think your buddy would tell you that twice the volts gets you twice the amps, when other factors are equal."

Makes sense since my 120 line fuse is 15 amps and my 220 line fuse for ac is 30 amps.
Point is you can get a high voltage low amp line.
Today's' circuits are safe. They even have lines that detect a short and shut off. (Modern bathrooms and kitchens are required to have such a circuit by code. Just in case you drop the hair dryer into the tub.)A determined individual can still electrocute themselves.
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