European AMP in US with step up transformer?

Hello, All!

I have a multi-layered question.

First part (maybe it makes sense to look at the 2nd part of my question first):

I have a 220V AMP from Europe that I would like to use in the US. However, this would require the use of a step up transformer and since I am not an electric expert, I am not sure what effect that will have on the sound quality. I am especially concerned that the European system works with 50hz VS. 60hz on the US system-- or does that no matter? Will any of this stepping up create a humm noise or some other unpleasant side effect? I am not looking to hear personal experiences, nor am I going to hold anyone liable-- just a few educated guesses/input would be appreciated.

Second dilemma:

The amplifier that I would like to use here in the US is a nice somewhat vintage Luxman L-530. This is obviously not in the same class as a McIntosh or some other top notch, high end equipment, but it is a class A/B amp that operates in class A under normal listening volume and has a pretty nice warm sound. In addition it is a very nice looking piece of equipment.

Now, the unit is probably worth 400-600 EURO if I sold it on eBay and I would have to probably spend $200 for a transformer-- in other words I could free up $600-$800 by selling the amp and not buying a transformer. Question, would $600-$800 by me anything decent here in the US in the used amp markets?

In short, is this amp worth it, or should I just sell it?

All input is greatly appreciated!

Best,

Oliver