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Step down transformer (220V to 100/110V) or buy 220V version of Shindo preamp

I really need to buy a Shindo preamp. a) Should I go for a original 220V Shindo preamp (harder to obtain, no local Shindo dealer here) or  b) get a 110/100V version from USA/Japan and use a step-down transformer c) Or get the Shindo dealer to alter the 110V to 220V.

questions:
1) At this level, is there sound degradation if I use a step down transformer?
2) The Shindo dealer will change the 110V to 220V but it will be done by a US tech not Shindo, I wonder if it will lead to some loss. Since soldering and change of resistor will happen. If that's the case I might just buy the 110V version from him.

Any thoughts on using step down transformer in general, does it lead to sound degradation?
essrand
erik_squires
16,009 posts
 
If you want a transformer that has 120VAC at the inputs, then you want a step-up transformer. :)

If you want a transformer that has 220VAC at the inputs and provides 120VAC to the pre, you want a step-down.


Best,

E
erik_squires
16,009 posts
 
About sound, if you use a fully balanced transformer, you may actually improve the overall sound quality.

Best,

E
skoczylas's avatar
skoczylas
240 posts
 
I live outside the USA and have used two step ups for ten years with three amps and a dac without a problem. They are heavy and take up the space of a shoebox if that’s an issue for you. They can also produce a slight hum (not via the speakers but from the unit itself). Overall I’m very happy and can find no issues with using them. 
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