To tell the truth, not much audio equipment (or other stuff) is "designed for the US". It's a global economy, and compatability with the various voltages around the world is usually a design requirement, and an easy one to meet. Transformer primary windings are usually split into two coils, connected in series (for 240V) or parallel (for 120V). A switch or a jumper often makes the change. but some units need to have wires reconnected.
Another approach common in low current equipment is a HF switching power supply which takes a wide range of voltage (like 50 to 260) and 50 or 60 Hz.
Investigate the capabilities of your equipment before investing in a step-down device.
Another approach common in low current equipment is a HF switching power supply which takes a wide range of voltage (like 50 to 260) and 50 or 60 Hz.
Investigate the capabilities of your equipment before investing in a step-down device.