Superlux Professional Monitor Headphones Black Edition Semi-Open HD681-AIR

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.

[About clocks that synchronize time via radio waves] The function of clocks that synchronize time via radio waves only works in the Japanese area. Please be careful. This model has the same basic performance as the HD681, but comes with newly developed silicone ear pads in addition to the conventional ear pads. Format: Dynamic, semi-open type Driver: 50mm dynamic type/neodymium magnet Frequency characteristics: 10Hz to 30,000Hz Sensitivity: 98dB SPL/mW Impedance: 32Ω Maximum input: 300mW Cable: Length: 2.5m, 3.5mmΦ stereo mini plug Conventional vinyl leather ear pads are attached to the product when the product is delivered and opened. You can replace them with silicone ear pads according to your preference.