Most amps are actually single-ended. Only certain specific amps are actually differential/balanced, and multi-channel amps are almost never differential/balanced. Also, the initial version of the Monolith did not have XLR inputs, so it is most likely single-ended anyways.
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On the Nord, when you pull up the page on the NC252 amp, scroll down to under the "Add to Basket" button and there will be a "USD to Euro" conversion widget. It defaults to USD to Euro, so I assumed they are charging Euros. If you are really interested in the Nord, maybe shoot them an email?
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On the Nord, when you pull up the page on the NC252 amp, scroll down to under the "Add to Basket" button and there will be a "USD to Euro" conversion widget. It defaults to USD to Euro, so I assumed they are charging Euros. If you are really interested in the Nord, maybe shoot them an email?