Consumer grade step-up transformers are usually poor quality and not really transformers but autoformers and have virtually no AC filtering.
Industrial grade step-down transformers can, technically, be wired backwards but, although I've never tried, I'll bet that would be noisy.
So, in this case, I'll suspend my normal xformer promoting and go along with the 240V line. Not because a well selected transformer would degrade sound. 240V also provides balanced AC, or close enough, which some gear appreciates. However, an electrician might wisely and legally insist using 240V outlets or horizontal spades so that nothing 120V can be plugged in. Which means that your power cords would have to be modified. Might even insist on GFCI's.
BTW, twice the volts is half the amps.
Industrial grade step-down transformers can, technically, be wired backwards but, although I've never tried, I'll bet that would be noisy.
So, in this case, I'll suspend my normal xformer promoting and go along with the 240V line. Not because a well selected transformer would degrade sound. 240V also provides balanced AC, or close enough, which some gear appreciates. However, an electrician might wisely and legally insist using 240V outlets or horizontal spades so that nothing 120V can be plugged in. Which means that your power cords would have to be modified. Might even insist on GFCI's.
BTW, twice the volts is half the amps.