FIIO FA19 FIO-IEM-FA19-B [Shipped from authorized Japanese retailer/serial number included] Wired earphones earphones

【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.

Equipped with 10 Knowles BA drivers per side 3-way crossover design for accurate band division Custom low frequency BA driver jointly developed by FIIO and Knowles. Equipped with "Negative Feedback Low Frequency Improvement System" that realizes a deep low frequency range S.Turbo technology brings out the performance of low-frequency drivers Equipped with notch filter technology for clean midrange Equipped with a dip switch that instantly changes frequency characteristics Adopts a 3D printed housing that supports a variety of high-quality sound technologies High-purity sterling silver cable with replaceable 3.5/4.4mm plugs Obtained high-resolution audio certification