step down from 220 to balanced 120VAC, is the way to go...
the big deal is to use the transformer’s linear range of loading from top to bottom, for your dynamic aspects of draw.
Way over spec transformers always sound best for audio, due to the non linear and widely dynamic ranges of draw.
Many many thousands of micro and macro transients all have to be in perfect agreement with their original patterns, shapes and placment, compared to one another and as a group, in any given moment and across time --- otherwise the ear hears it.
the big deal is to use the transformer’s linear range of loading from top to bottom, for your dynamic aspects of draw.
Way over spec transformers always sound best for audio, due to the non linear and widely dynamic ranges of draw.
Many many thousands of micro and macro transients all have to be in perfect agreement with their original patterns, shapes and placment, compared to one another and as a group, in any given moment and across time --- otherwise the ear hears it.