This sounds odd to me. When you say "doesn't work", what do you mean? It doesn't boot, it doesn't make sound, it makes sound but there's noise, what?

I find it odd that you'd need any sort of a filter, regardless of the amplifier. And as far as I know, American and European amplifiers do not work on different standards.

I'm very confused by all of this. Hugo said you need to send the unit back for repair, so definitely do that. My concern is: why did the failure happen in the first place, and what's so different about your system that made the failure happen?

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Tony Fabris