Step down transformers detrimental to SQ?


Hello, does anyone know if step down (or up) transformers have adverse effects on sound quality? I'm looking to pickup a 100V amp and use a step down here in US. 

Thanks
mrkoven
I heard some crazy Japanese audiophiles do double conversion, up and down, and claim it improves the sound. I should try it one day. But before that I should try to run my Nak deck on 220V - it has custom dual voltage transformer.
Thanks for the acupwr link.

And @erik_squires yes well I haven't purchased yet but eyeing a Luxman from Japan off eBay.. good guess! :)
millercarbon
Line voltage is nominal, as in uncalibrated, as in it varies. What is called 110 here in the US can turn out to measure lower ...
This is mistaken. Nominal voltage in the US is 120VAC and is regulated by state agencies, such as a Board of Public Utilities. Typically, a tolerance of ±5 percent is allowed.

I wouldn't recommend using any device designed for 100VAC on a 120VAC line.
I heard some crazy Japanese audiophiles do double conversion, up and down, and claim it improves the sound.

Not quite but close, there is a bit of a fad at the moment over there, to use 1:1 isolation transformers, which are 100v in 100v out they are doubling up on these.
I’ve used a 2amp one now for 20 years now for my source equipment only, and will always do so.
https://www.servostabilizer.org.in/wp-content/uploads/2017/10/images1.png

https://www.servostabilizer.org.in/isolation-transformer/

here is a US made one, I’m sure there are others.
http://www.solar-emc.com/6220-1B.html

Here are some eBay ones.
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2053587.m570.l1311.R1.TR12.TRC2.A0.H0.XIsolat...

Cheers George